EXTREME Tier Shift

[The Immortal]

http://replay.pokemonshowdown.com/extremetiershift-368922164

Chatot is BROKEN (I Think even without chatter)
Open Cancel

I don't think low ladder is a good example. If it beats legitimately good opponents due to sheer luck, then you have a case.

 

[Quantum Tesseract]

http://replay.pokemonshowdown.com/extremetiershift-368922164

Chatot is BROKEN (I Think even without chatter)
Open Cancel

I don't think low ladder is a good example. If it beats legitimately good opponents due to sheer luck, then you have a case.

^^
Not only that, but even had it been a good user, it'd a) be a bad example of it being broken without chatter, and b) be just another team losing because they lacked a normal resist- In a tier with ekiller, linoone, Chatot, Swellow, and Ursaring. This is especially problematic because 2 common types resist it, and there is a type outright immune (especially useful since 2/3 of normal resists also resist flying) Not coming prepared is your own problem, as is lacking a move on Groundceus to hit flying types, or sacking your team for no reason.

 

[tehy]

yeah

not to pile on dude, but this seems like an example of a stall team getting taken on by a strong stallbreaker they hadn't prepared for (stall main here). If you tell me you can't build differently to patch up that weakness at all, and neither can any stall team, that might be something to look into - however, getting 6-0'd the first time you see it really isn't enough proof.

(for example, you've got a quagsire and an arceus-ground - why not make it an arceus-rock? is there a reason?)

 

[HumbleSpaceMan]

With sticky web being a pretty good strategy with decent setters and great abusers, I did a bit off team building. One problem i faced was the plethora of defoggers with stuff like mantine,skuntank and noctowl annoyingly bulky.So i thought - why not use a defiant uset that can also abuse sticky web, counter the occasional servine which can use the speed drop as a boost and provide some priority. Enter Bisharp 2.0 -

Pawniard @ Life Orb
Ability: Defiant
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Knock Off
- Stealth Rock
- Sucker Punch
- Iron Head

125 attack may sound underwhelming but the utility of STAB Knock off and rocks plus the ability to pick off weakened pokemon is quite useful. Most importantly defiant does its job of exploiting defog users and can be a wincon against opposing SW teams.85/110/80 bulk isn't too shabby either while 100 speed is quite good.

 

[Felis]

I must say that Weezing is exceptionally useful in this meta. It's got few counters to it, and if you have it with a Quagsire it helps significantly.
I find that this is a good set up for set up sweepers, as well as a great physical wall.
It's stats get boosted as follows: 95/120/150/115/100/90
Weezing Rocky Helmet/Black Sludge
Ability: Levitate
EVs: 248 HP/8Spa/252+Spdef
Calm/Modest Nature
Flamethrower
Will-o-wisp
Sludge Bomb/Pain Split
Clear Smog

 

[Not Scicky]

Drifblim is pretty fun here. I've been running this to a fair bit of success:

Drifblim @ Lum Berry
Ability: Unburden
EVs: 152 HP / 252 SpA / 104 Spe
Modest Nature
- Calm Mind
- Shadow Ball
- Thunderbolt
- Rest

Pretty straightforward, use Drifblim's newfound bulk to nab some calm mind boosts, rest after a few turns to heal yourself completely, activate the lum berry and get the speed boost from Unburden.

For reference, Drifblim's stats after the boost are: 190/120/84/130/94/120

 

[Tornadus-Therian]

I think Clamperl should be looked at. Maybe I'm doing something horribly wrong on my stall team, but so far I just click X every time I see one. I can't find anything that it doesn't just completely trash. My best case scenario is sack something to status it and then wait until my second pokemon gets worn down alongside it to stall it out with a third.

At +2 it just 2HKOs every pokemon in the whole game with Surf. It OHKOs everything up to and including neutral typing max/max 120/120 bulk and 2HKOs something with theoretical max/max 255/255 bulk with SR + Spikes up. Even if I had something that could take a hit and do something meaningful back, there's no cost for it to just switch out since it can setup as many times as it wants.

It starts with 838 SpA and has Shell Smash. I don't think much more needs to be said in that regard. I can see that it's not a huge threat to offense, which is by far and away the most prevalent playstyle on ladder since you can RK it really easily or kill it as it sets up, but against stall it breaks every wall out there regardless of typing and stats.

+2 252+ SpA Deep Sea Tooth Clamperl Surf vs. 252 HP / 252+ SpD Blissey: 379-447 (53 - 62.6%) -- guaranteed 2HKO after Leftovers recovery

+2 252+ SpA Deep Sea Tooth Clamperl Ice Beam vs. 252 HP / 252+ SpD Lugia: 484-570 (116.3 - 137%) -- guaranteed OHKO <- no multiscale, clearly a 2HKO with it though

+2 252+ SpA Deep Sea Tooth Clamperl Ice Beam vs. 248 HP / 252+ SpD Giratina: 580-684 (115.3 - 135.9%) -- guaranteed OHKO

+2 252+ SpA Deep Sea Tooth Clamperl Surf vs. 252 HP / 252+ SpD Arceus-Water: 217-256 (48.8 - 57.6%) -- 96.1% chance to 2HKO

+2 252+ SpA Deep Sea Tooth Clamperl Surf vs. 252 HP / 252+ SpD Cryogonal: 330-388 (77.8 - 91.5%) -- guaranteed OHKO after Stealth Rock

+2 252+ SpA Deep Sea Tooth Clamperl Surf vs. 248 HP / 252+ SpD Regice: 255-301 (57.5 - 67.9%) -- guaranteed 2HKO after Leftovers recovery

252+ SpA Deep Sea Tooth Clamperl Surf vs. 252 HP / 252+ SpD Unaware Quagsire: 238-282 (50.2 - 59.4%) -- 80.1% chance to 2HKO after Leftovers recovery

+2 252+ SpA Deep Sea Tooth Clamperl Ice Beam vs. 252 HP / 252+ SpD Primal Groudon: 353-416 (87.3 - 102.9%) -- 18.8% chance to OHKO

 

[Quantum Tesseract]

I think Clamperl should be looked at. Maybe I'm doing something horribly wrong on my stall team, but so far I just click X every time I see one. I can't find anything that it doesn't just completely trash. My best case scenario is sack something to status it and then wait until my second pokemon gets worn down alongside it to stall it out with a third.

At +2 it just 2HKOs every pokemon in the whole game with Surf. It OHKOs everything up to and including neutral typing max/max 120/120 bulk and 2HKOs something with theoretical max/max 255/255 bulk with SR + Spikes up. Even if I had something that could take a hit and do something meaningful back, there's no cost for it to just switch out since it can setup as many times as it wants.

It starts with 838 SpA and has Shell Smash. I don't think much more needs to be said in that regard. I can see that it's not a huge threat to offense, which is by far and away the most prevalent playstyle on ladder since you can RK it really easily or kill it as it sets up, but against stall it breaks every wall out there regardless of typing and stats.

Well, first off all of your calcs are off. For instance,
+2 252+ SpA Deep Sea Tooth Clamperl Ice Beam vs. 252 HP / 252+ SpD Primal Groudon: 302-356 (74.7 - 88.1%) -- guaranteed 2HKO
252+ SpA Deep Sea Tooth Clamperl Surf vs. 252 HP / 252+ SpD Unaware Quagsire: 220-259 (48.4 - 57%) -- 41% chance to 2HKO after Leftovers recovery
+2 252+ SpA Deep Sea Tooth Clamperl Surf vs. 252 HP / 252+ SpD Regice: 219-258 (49.3 - 58.1%) -- 60.5% chance to 2HKO after Leftovers recovery

At a geuss, the reason is is that you gave it +50 instead of +40. Obviously its till badly injures all of these, but the point remains.
As far as stall counters go, might I suggest Alomonola? +2 252+ SpA Deep Sea Tooth Clamperl Surf vs. 248 HP / 252+ SpD Alomomola: 276-325 (48.1 - 56.7%) -- 36.3% chance to 2HKO after Leftovers recovery. Combine that with protect, and the calc turns to a 1.2 chance. They can obviously boost again, but alomonola gets knock off to majorly screw them over, and can recover hp even when crippled by switching out.

 

[bp scrub]

In the calcs above, Regice, Groudon, and Cryogonal all win with a super effective move (Tbolt, Solarbeam, Freeze Dry)

Something like AV Gogoat can also switch in on anything and OHKO with horn leech when clamperl is at -1

104+ Atk Gogoat Horn Leech vs. -1 0 HP / 0 Def Clamperl: 320-378 (109.9 - 129.8%) -- guaranteed OHKO
+2 252+ SpA Deep Sea Tooth Clamperl Ice Beam vs. +1 252 HP / 152 SpD Gogoat: 392-462 (73.9 - 87.1%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery

0 SpA Primal Groudon Solar Beam vs. -1 0 HP / 0 SpD Clamperl: 384-454 (131.9 - 156%) -- guaranteed OHKO
+2 252+ SpA Deep Sea Tooth Clamperl Ice Beam vs. 252 HP / 184+ SpD Primal Groudon in Sun: 320-378 (79.2 - 93.5%) -- guaranteed 2HKO after Stealth Rock

252+ SpA Regice Thunderbolt vs. -1 0 HP / 0 SpD Clamperl: 358-422 (123 - 145%) -- guaranteed OHKO
+2 252+ SpA Deep Sea Tooth Clamperl Surf vs. 252 HP / 0 SpD Regice: 270-318 (60.8 - 71.6%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery

0 SpA Cryogonal Freeze-Dry vs. -1 0 HP / 0 SpD Clamperl: 306-362 (105.1 - 124.3%) -- guaranteed OHKO
+2 252+ SpA Deep Sea Tooth Clamperl Surf vs. 252 HP / 252+ SpD Cryogonal: 282-333 (66.5 - 78.5%) -- 31.3% chance to OHKO after Stealth Rock

also a shit ton of random low tier pokemon can be eved to take any move at +2 and OHKO back, if you really want to be hipster or something

+2 252+ SpA Deep Sea Tooth Clamperl Surf vs. 252 HP / 160 SpD Bouffalant: 400-472 (84.3 - 99.5%) -- guaranteed 2HKO
96+ Atk Choice Band Reckless Bouffalant Head Charge vs. -1 0 HP / 0 Def Clamperl: 484-570 (166.3 - 195.8%) -- guaranteed OHKO

+2 252+ SpA Deep Sea Tooth Clamperl Hidden Power Grass vs. 0 HP / 0 SpD Lapras: 404-476 (83.9 - 98.9%) -- guaranteed 2HKO after Leftovers recovery
0 SpA Lapras Freeze-Dry vs. -1 0 HP / 0 SpD Clamperl: 288-342 (98.9 - 117.5%) -- 93.8% chance to OHKO

etc

some of these sets are tailored just for Clamperl, but then again, Pdon and Ho-Oh run EVs just for Xerneas anyways

 

[Reeksquad]

I must say that Weezing is exceptionally useful in this meta. It's got few counters to it, and if you have it with a Quagsire it helps significantly.
I find that this is a good set up for set up sweepers, as well as a great physical wall.
It's stats get boosted as follows: 95/120/150/115/100/90
Weezing Rocky Helmet/Black Sludge
Ability: Levitate
EVs: 248 HP/8Spa/252+Spdef
Calm/Modest Nature
Flamethrower
Will-o-wisp
Sludge Bomb/Pain Split
Clear Smog

I would run full defense + Bold to better check physical attackers. Also, I wouldn't run pain split over sludge bomb, as that is stab, I would run it over flamethrower though.

Drifblim is pretty fun here. I've been running this to a fair bit of success:

Drifblim @ Lum Berry
Ability: Unburden
EVs: 152 HP / 252 SpA / 104 Spe
Modest Nature
- Calm Mind
- Shadow Ball
- Thunderbolt
- Rest

Pretty straightforward, use Drifblim's newfound bulk to nab some calm mind boosts, rest after a few turns to heal yourself completely, activate the lum berry and get the speed boost from Unburden.

For reference, Drifblim's stats after the boost are: 190/120/84/130/94/120

Chesto is better, as lum berry is activated from all status effects.

 

[Not Scicky]

Oh hey, you're right! Thank you.

Also, just spent way too much time making a list of all the officially PU mon's updated BST's, take a look:

Hide

Altaria - 730

Ampharos - 750

Arbok - 678

Ariados - 630

Armaldo - 735

Articuno - 820

Audino - 785

Avalugg - 754

Banette - 695

Basculin - 700

Bastiodon - 735

Beartic - 725

Beautifly - 635

Dustox - 625

Beedrill - 635

Beheeyem - 725

Bellossom - 730

Bibarel - 650

Bouffalant - 730

Butterfree - 635

Camerupt - 700

Carbink - 740

Carnivine - 694

Castform - 660

Chatot - 651

Cherrim - 690

Chimecho - 665

Clamperl - 585

Clefairy - 563

Corsola - 620

Crustle - 715

Cryogonal - 725

Dedenne - 671

Delcatty - 620

Delibird - 570

Dewgong - 715

Dodrio - 700

Drifblim - 738

Dunsparce - 655

Duosion - 610

Dusknoir - 765

Electrode - 720

Emolga - 668

Farfetch’d - 592

Fearow - 682

Flareon - 765

Floatzel - 735

Fraxure - 650

Furfrou - 712

Furret - 655

Gabite - 650

Gigalith - 755

Girafarig - 695

Glaceon - 765

Glalie - 720

Gogoat - 771

Golduck - 740

Golem - 735

Gorebyss - 725

Gothitelle - 730

Gourgeist - 734

Grumpig - 710

Heatmor - 724

Huntail - 725

Hypno - 723

Illumise - 640

Jumpluff - 700

Kadabra - 640

Kingler - 715

Kricketune - 624

Lapras - 775

Leafeon - 765

Leavanny - 740

Ledian - 630

Lickilicky - 755

Lopunny - 720

Lumineon - 700

Lunatone - 680

Luvdisc - 570

Luxray - 763

Machoke - 645

Magcargo - 650

Maractus - 701

Marowak - 665

Masquerain - 654

Meganium - 775

Meowstic - 706

Metang - 660

Mightyena - 660

Minun - 645

Misdreavus - 675

Monferno - 645

Mothim - 664

Mr. Mime - 700

Murkrow - 645

Ninetales - 745

Ninjask - 696

Noctowl - 682

Octillery - 720

Pachirisu - 645

Parasect - 645

Pawniard - 580

Persian - 680

Phione - 720

Pidgeot - 719

Plusle - 645

Politoed - 740

Prinplup - 645

Probopass - 765

Purugly - 692

Quilladin - 645

Raichu - 725

Rampardos - 735

Rapidash - 740

Raticate - 653

Regice - 820

Regigigas - 910

Relicanth - 725

Roselia - 640

Rotom-f - 760

Sawsbuck - 715

Seaking - 690

Servine - 653

Seviper - 698

Shedinja - 436 (476 Without Wonder Guard HP Cap)

Simipour - 738

Simisage - 738

Simisear - 738

Slaking - 910

Solrock - 680

Spinda - 600

Stantler - 705

Stoutland - 740

Stunfisk - 711

Sudowoodo - 650

Sunflora - 665

Swalot - 707

Swanna - 713

Swoobat - 665

Tangela - 675

Torkoal - 710

Tropius - 700

Unfezant - 728

Unown - 576

Ursaring - 740

Vanilluxe - 775

Vespiquen - 714

Vibrava - 580

Volbeat - 640

Vullaby - 610

Wailord - 740

Walrein - 770

Wartortle - 645

Watchog - 660

Whiscash - 708

Wigglytuff - 675

Wobbuffet - 645

Wormadam - 664

Zebstrika - 737

Zweilous - 660

 

[tehy]

can i just take a moment to say that there needs to be a tier shift calculator please please please

if there is one already hit this post with that crisp Delete and vm it to me but if there isn't, it would be so nice.

 

[OmegaRoarOfTime]

Slaking with Choice Band Giga Impact is gonna be even more fun to use than it usually is.

 

[sin(pi)]

Slaking with Choice Band Giga Impact is gonna be even more fun to use than it usually is.

It's also beyond awful and should never be used seriously (bar Voltturn Mayhem, but even there it's easily punished).

Explanation: no matter how strong it is, the recharge/Truant turn is guaranteed setup for literally anything (you're forced to stay in and wait) - in a format where +2 clamperl runs through teams like a knife through butter, that's not something you want to allow. If your opponent has a ghost/steel/rock which can set up, they get two turns to do that (recharge + switch out, since you're locked in).

 

[CallMeLefty]

While I do not play ETS, let me just hop into the slaking argument: slaking can find its niche, it is just really hard to teambuild with.
Proof:http://www.smogon.com/forums/threads/normal-spam-slaking-bulky-offense-peaked-3.3569610/
So its not just some random dude that made slaking work in low ladder. I tried the team myself and slaking, while being hard to use, still is extremely powerful.

Dont say it is impossible to make slaking work, its hard but not impossible

 

[bp scrub]

252+ Atk Choice Band Slaking Giga Impact vs. 248 HP / 252 Def Avalugg: 243-286 (51.3 - 60.4%) -- 91.8% chance to 2HKO after Leftovers recovery
252+ Atk Choice Band Slaking Giga Impact vs. 252 HP / 252+ Def Quagsire: 366-432 (80.6 - 95.1%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Choice Band Slaking Gunk Shot vs. 252 HP / 252+ Def Tangela: 316-372 (76.3 - 89.8%) -- guaranteed 2HKO
252+ Atk Choice Band Slaking Giga Impact vs. 252 HP / 0 Def Alomomola: 480-565 (78.1 - 92%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Choice Band Slaking Giga Impact vs. 252 HP / 252+ Def Audino: 343-405 (70 - 82.6%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Choice Band Slaking Gunk Shot vs. 252 HP / 252+ Def Mega Audino: 314-370 (66.8 - 78.7%) -- guaranteed 2HKO

If it cannot OHKO, it gets stalled out

Even if it gets a kill with Giga Impact, the opponent can just send in a setup mon, get in a turn of setup, and then kill Slaking or win 1v1 with bulkier mons.

for example:

Clamperl gets off a free Shell Smash, which means you basically have to sack something to it, and then the mon that revenge kills Clamperl takes a shit ton of damage from the +2 move.

Gogoat can setup a Bulk Up, which allows it to take Slaking's hits and possibly sweep.
252+ Atk Choice Band Slaking Giga Impact vs. +1 252 HP / 0 Def Gogoat: 367-433 (69.2 - 81.6%) -- guaranteed 2HKO after Leftovers recovery

Swoobat gets a free Calm Mind. The next turn, Swoobat subs. If Slaking stays in, Swoobat gets even more turns of setup and if Slaking switches out, then Swoobat just got a free Calm Mind + Sub which means it'll probably damage your team hard.

 

[k.r.o.b.]

I don't know why nobody mentioned it

Swoobat Lum Berry
Ability: Simple
EVs: 252 SpA / 252 Spe
Timid/Modest Nature
IVs: 0 Atk
- Calm Mind
- Stored Power
- Heat Wave
- Roost

with 107\97\95\117\95\154 stats Swoobat can set up on every special mon, and it can survive all priority moves bar strong, STAB sucker punch. If it gets +2\+2 it is a very good cleaner, and if it manages to boost twice everything will die. You really need to be prepared for it.

Another good pokèmon I use is

Lickilicky @ Leftovers
Ability: Oblivious
EVs: 224 HP / 252 Def / 32 SpD
Impish Nature
- Dragon Tail
- Wish
- Protect
- Heal Bell

150\125\135\120\135\90 stats make Lickilicky a strong cleric and wishpasser. It's really passive, but it can wall and phaze out most setup sweepers, while supporting his teammates with wish and heal bell. Oblivious is a wonderful ability for a defensive mon, making him untauntable.

I want someone to try Wailord, it has blissey-level bulk on both sides, but it lacks recovery

 

[Calista]

Both of those mons are known in the meta and Swoobat is definitely a threat. Personally, I prefer Audino over Lickilicky due to Regenerator, but both have their merits (such as being setup bait).
Regarding Wailord, there is probably not much reasong to use it over Primal Kyogre, which takes zero from Fire-types, most importantly Sacred Fire (even though you shouldn't switch into Ho-Oh, unless he can absolutely not afford to BB) and has Thunder and Thunder Wave to bypass certain checks. It can also Calm Mind past special Walls. I don't know about defensive sets but I'd say, Alomomola does it better, not because of stats but because of (again) Regenerator and a much better support movepool.

 

[HumbleSpaceMan]

Not sure if it's already been mentioned but Volbeat can be brilliant in this meta.
Prankster Baton Pass plus Tail Glow with good bulk and excellent special sweepers to pass a +3 boost makes it a dangerous wincon in this meta. Prankster Encore helps too.
Volbeat @ Focus Sash
Ability: Prankster
EVs: 252 HP / 184 Def / 72 SpD
Bold Nature
IVs: 0 Atk
- Thunder Wave
- Encore
- Tail Glow
- Baton Pass

 

[INSANE CARZY GUY]

Honestly with prankster and sash You are all but given a free pass. I want to think clostyler will have a niche like in ubers (10+) with being able to stack hazards and break subs/study/sash but it might need the lum berry

 

[HumbleSpaceMan]

I don't think +10 is enough to make cloyster viable especially when so many hazard stackers are available. Crustle for example is quite similiar with spikes and SR, shell smash and high defense and has a higher stats except for defense.

Also can Chatot be banned? Or more specifically can it be restricted? Chatter coming from a 121 speed and 122 special attack is extremely annoying with games being decided whether you hit yourself or not.

 

[Quantum Tesseract]

I don't think +10 is enough to make cloyster viable especially when so many hazard stackers are available. Crustle for example is quite similiar with spikes and SR, shell smash and high defense and has a higher stats except for defense.

Also can Chatot be banned? Or more specifically can it be restricted? Chatter coming from a 131 speed and 132 special attack is extremely annoying with games being decided whether you hit yourself or not.

First off, as has been stated, chatot has only 121 speed and 122 spa with chatter. Secondly, why, specifically, does that mean it should be banned? Banning is serious, after all, and chatot could do the same in standard with a scarf or vs the many things slower than 91 speed. In addition, Machamp/Machoke can do the same thing with a scarf, and while ghost types can switch in they mostly die to Koff. Does that make Machamp banworthy? I'm not saying it isn't, because I know firsthand how annoying chatot can be, but it isn't the fastest or strongest threat in the metagame by a long shot, and while it's difficult to switch in on it loses to a bunch of things 1v1 and has few switchin opportunities aside from its ground/ghost immunities. What specifically pushes it over the edge for you?

 

[HumbleSpaceMan]

I actually haven't met a lot of chatot's while playing on showdown and I've always won when playing against them so I don't think it's even close to being a huge threat and as you mentioned 123 Spa is mediocre at best. But the fact remains that Chatot will pretty much always fire off a Chatter.

Again as you mentioned Machole has DP but it's much slower even with as scarf, anyways ghost's are kinda mandatory with all the normal spam. Other mons like Confuse Ray mons(lol) can be taunted. Chatot however always gets a confusion in. Sub+Lefties sets can just wait for you to hit yourself, then roost the damage. If you don't have a faster pokemon at that point of time and no strong priority, then the match depends purely on luck. Which is imo uncompetitive.

To repeat Chatot is in no way broken. It has several counters and it's stats aren't great. But it can end up being uncompetitive especially with t-wave or sticky web support.

 

[Quantum Tesseract]

I actually haven't met a lot of chatot's while playing on showdown and I've always won when playing against them so I don't think it's even close to being a huge threat and as you mentioned 123 Spa is mediocre at best. But the fact remains that Chatot will pretty much always fire off a Chatter.

Again as you mentioned Machole has DP but it's much slower even with as scarf, anyways ghost's are kinda mandatory with all the normal spam. Other mons like Confuse Ray mons(lol) can be taunted. Chatot however always gets a confusion in. Sub+Lefties sets can just wait for you to hit yourself, then roost the damage. If you don't have a faster pokemon at that point of time and no strong priority, then the match depends purely on luck. Which is imo uncompetitive.

To repeat Chatot is in no way broken. It has several counters and it's stats aren't great. But it can end up being uncompetitive especially with t-wave or sticky web support.

As it happens, scarf Machamp is 1 speed slower (still oustpeeding Arceus by 1 point, which is nice because), while machoke has 70 extra speed with a scarf. Not all confuse Ray can be taunted, either- magic bounce does exist, although that has a ton more opportunity cost because you aren't dealing damage at the same time.

As far as strong priority goes, however, on most offense that is pretty much required, and stall can afford to run blissey, which takes about 0 from confusion damage or uninvested chatter (you aren't running sub+roost on a set with nasty plot), while regenvests like Slowking can pivot in and out basically for free. That's not even getting into the king of TS stall, mr mime.
To me, uncompetitive is a decent argument, but one I'm not sure is valid. For instance, confusion has only a 50% chance of immobilizing you, while serene grace shaymin-s has a 60% chance on a similarly powered attack. Not only that, but shaymin-sky is also faster, has leech seed for subseed, and can fit its main attack and boosting into one slot (seed flare), but isn't even close to banworthy. The best chatot set is probably sub plot chatter boomburst, which is an excellent stall breaker and not much else. Notably, offense destroys it, which in an ubers based metagame is huge.

 

[Imperator Romanum]

Chatot discourages teambuilding, because although it has counters - probably some mons with own tempo - that's all the counters it has. Chatter makes it a 50-50, meaning it can very well beat anything that doesn't have soundproof/oblivious/own tempo.

It promotes lazy teambuilding where as instead of preparing for stall opponents slugishly puts a chatot on their team and calls it done.