Sorry for taking so long, going to implement to GP check above.additions deletions comments
[Overview]
<p>Tangrowth has had a good niche back in the days of Excadrill, but it can still hold its own now. However, with Amoonguss gaining Regenerator in BW2 since Amoonguss got Regenerator in BW2, Tangrowth gained more competition for a team slot. The famed Ferrothorn also seems to be a better defensive Grass-type as well. Tangrowth does have some good points over the two though,: it has more phyiscal physical bulk than Amoonguss, and Regenerator and Sleep Powder over Ferrothorn. It can even take an offensive approach with Chlorophyll, being which makes it a powerful mixed sweeper than can catch teams off-guard. This is where the good points stop however. It has trouble with rain, sun, and hail teams, since its special bulk is not enough to stomach powerful moves such as Hydro Pump, Fire Blast, and Blizzard and even Hydro Pump. Additionally, powerful mixed sweepers can spell an early doom for Tangrowth. However, Tangrowth does have the niche of being able to take on most physical attackers and sweep unprepared teams.</p>
[SET]
name: Physically Defensive
move 1: Sleep Powder
move 2: Leech Seed / Knock Off
move 3: Giga Drain / Power Whip
move 4: Hidden Power Ice / Hidden Power Fire
item: Leftovers
ability: Regenerator
nature: Bold / Relaxed
evs: 248 HP / 252 Def / 8 SpD
[SET COMMENTS]
<p>Tangrowth has very nice physical bulk, and this set takes full advantage of it. With Regenerator, it can safely scout powerful physical attackers such as Terrakion and switch out if need be, healing one-third of its health every time it does so. This gives it a great advantage over other physical walls such as Ferrothorn, since it can switch out with little to no repercussions. Sleep Powder is a great move for putting a switch-in to sleep, and with BW sleep mechanics, this means that the opponent will be useless throughout the match. Leech Seed gives Tangrowth move more recovery, especially on against Pokemon with high HP stats. It is also good for healing helps heal other teammates, because Tangrowth will often be switching out and often switches out of a seeded opponent and bringings new teammates in. Knock Off is another option to rid Choice items off of Pokemon such as Dragonite, Salamence, and Keldeo locked into Secret Sword, making them weaker and easier to deal with. make opposing Pokemon less effective. It's especially useful against physical Choice item users or even Keldeo locked in to Secret Sword. Giga Drain is the best choice for a STAB move, as it heals Tangrowth even more and it easily 2HKOes Pokemon such as Terrakion and physically defensive Hippowdon, while neither of them can break through Tangrowth. Power Whip, however, is a more powerful option for hitting Tyranitar, specially defensive Politoed, and Jellicent, but it has lower accuracy than Giga Drain and doesn't heal Tangrowth either. The final move is a choice between two different Hidden Powers;. Hidden Power Ice is the preferred option for hitting the Dragon-types in OU, (RC) such as Dragonite and Salamence, keeping them from setting up on Tangrowth while dealing with the Choiced variants easily. Hidden Power Fire, on the other hand, can hit the Steel-types in OU, (RC) such as Scizor, Forretress, and Ferrothorn, for good damage, especially in the sun.</p>
[ADDTIONAL COMMENTS]
<p>The EVs on this set can be tweaked to outspeed certain threats and defeat them before they give you problems. A spread of 248 HP / 168 Def / 84 Spe can be used to outspeed specially defensive Jellicent and either put it to sleep or 2HKO it with Power Whip. A spread of 248 HP / 128 Def / 124 Spe is also useful for outspeeding lets you outspeed uninvested Scizor and neutral-natured Tyranitar. This will lower its Tangrowth's physical bulk though, making it more susceptible to 2HKOes from the like likes of Choice Band Tyranitar after Stealth Rock damage. If one is using a Relaxed nature, then Tangrowth will need a lot more EVs, 156 for Jellicent and 200 for Scizor, and it may not be worth lowering its physical bulk for a slightly more powerful Power Whip. However, a Relaxed nature is better for catching Jellicent on the switch, 2HKOing it even if Tangrowth gets burned on the next turn. Other moves that one could use include Stun Spore to spread even more status around, though it makes Tangrowth very similar to Amoonguss then, and removing one of the moves that differentiates Tangrowth from Amoonguss defeats the purpose of using Tangrowth. though this defeats the purpose of Tangrowth, as Amoonguss mostly outclasses it with this set of moves. Leaf Storm is another powerful option for hitting Pokemon such as Jellicent, as it can possibly 2HKO specially defensive Jellicent with Stealth Rock damage. But a lowered Special Attack makes it a lot easier for Dragon- or Steel-types to setup on you, especially Dragonite. Earthquake is your best option against Jirachi, especially the Calm Mind variants who can shrug off Hidden Power Fire, and it also easily deals with Heatran. Focus Blast is your best move against Ferrothorn in rain, though it has shaky accuracy and won't always 2HKO. It is also Tangrowth's best move for hitting the Kyurem formes on the switch.</p>
<p>One of the best partners for Tangrowth is Heatran, as Heatran has excellent synergy with it, and they resist nearly every one of each other's weaknesses, (RC) with the only exception being the Fighting-type but Fighting. Heatran can also spread burns around with Lava Plume, making Tangrowth's job a lot easier, and walls some of the special attackers that give Tangrowth problems. Heatran also deals with does well against sun and hail teams quite well, which are both major problems for Tangrowth, while Tangrowth can handle the various Ground-, Water-, and Fighting-types that give Heatran a lot of problems. Another great idea is to pair Tangrowth up with Slowbro or Slowking, since it forms a dual-Regenerator core that can be a nightmare to face. Entry hazards are also a big deal for trouble Tangrowth, as they cut into its best form of recovery in Regenerator. Spinners such as Starmie or Tentacruel are good for the nice synergy they have with Tangrowth, and Starmie Tentacruel can even handle rain teams for Tangrowth (I would say Tentacruel does a much better job of handling rain teams than Starmie does. Whether you keep this as Starmie or change it to Tentacruel, you should give an explanation of this, as it's not terribly clear how they handle rain teams.). Forretress is also another option since it gives another physically defensive Pokemon to pair Tangrowth up with, but the shared Fire weakness will be is problematic.</p>
So as you can see I only edited the first analysis. There's a reason for this. See ginganinja's comment. You may have mentioned Venusaur as a partner, but the analysis only suggests that Venusaur would be a decent partner for the set, not that another Chlorophyll sweeper is an essential partner for Tangrowth, as ginganinja implied. However, changing the analysis to express this is a big task, as you actually have to mention other Chlorophyll-users as partners outside of the AC section. The whole tone and structure of the analysis has to change. I would talk this over with QC and see if their consensus is that ginganinja's claim is true, and then redo the second analysis if they agree. As a grammar checker, I am not in the right executive position to make such a big change, but I do feel that if ginganinja is correct, your Chlorophyll analysis is highly misleading.
Now, about the second set, I'll talk to ginganinja and the people who QCed the skeleton about it. I remember seeing from swamprocket's old thread that Double Chlorophyll was actually removed from the original skeleton when swamprocket had it initially. I'm on the fence about it myself. I really don't find the lower speed to be too much of an issue. Few Scarfers can take down a full health Tangrowth with the exception of Latios and Victini/Darmanitan. The latter two aren't seen often, and Venusaur really doesn't like Scarf Latios either. I spent a while playtesting Tangrowth out and I found it works pretty well as a solo-Chlorosweeper.
But i'll look into it, and again, apologies for taking so long about this.