To Respond to my responses (not in an argue-y way but more of "I saw that"):
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OiawesomeDG: Mew is good/great/whatever. Like what I said, I love it. But S-Rank v. A-Rank, I just think Mew is A-Rank for reasons I stated. I get what you mean in comparing pokemon; I was just comparing two basic 'mons easy to relate to Mew--I wasn't going to go all out and say that they're better in every situation ever, but that Mew is at a disadvantage (at times at least) with its unspecified stats. But, etcetc we disagree, that we can agree on. (<:3)
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I080I: Stallbreaker set I haven't tried personally- only heard about it. I might have to sometime soon...hm.
Anyway, E-rank no longer exists because while some quite a few lower tier things are usable/viable in UU, listing all of them would be tedious, and/or they are too much specified on a certain niche or gimmicky.
Claydol/Dusclops/Riolu/etc are fine in D-Rank, because:
A) E-Rank no longer exists, blahblahblah
But even if there was--
B) Claydol, while not very good in typing, has Levitate which makes him immune to (T)spikes. And he also resists Stealth Rock, which is kinda nice for a spinner. Plus, he can also set up SR, something no other UU spinner can boast (best one is Kabutops, which doesn't run SR usually iirc). While I wouldn't want to have to put it on my team, it does have that slight niche, enough for it to not be dead weight.
C) Dusclops is somewhat annoying. Especially if it's someone skilled using him. he's got bulk, and ghost typing isn't too shabby defensively. although it's still D.
D)Riolu is a gimmick and little more. However, the fact that if you don't have a priority move on your team, or the 'mon that does is dead, (let's say it's your arcanine but it's at 30% HP; good luck taking an SR+Spikes.) you're screwed.
E) Ambipom is still annoying. If it isn't dead the first turn (which is surprisingly possible) it'll come in later and it could end your sweep, partially break through your wall or even sweep itself. Fake Out is annoying, and it is bait to get a steel or ghost type in, however it still causes a flinch. And due to Togekiss we all know how bad flinches can be.
On another note, I just saw that Cryogonal is D-rank as well...Can someone please explain to me? I haven't used him before, but he seems like he would be good on at least hail teams. (correct me if I'm wrong, but weren't hail-based 'mons supposed to be 'graded' based on being in hail?) Or possibly even offensive teams. I know his defense is shit, but I would think you could play around it....??????
Anyway, I'm going to agree that Chandy be A-rank- Very strong, but speed is negligible even with scarf; it's common weaknesses make it unsuitable for S-rank in my personal opinion...Although it is a tough choice. Being walled by Snorlax is never a fun thing. Even Specs will have a hard time, forced to be locked into HP fighting. Yet, I admit- Snorlax isn't literally on every team. However, Chandelure is usually pressured against any bulky water that's not weak to ghost, or anything faster than it with a super effective move, which most teams should carry one, the other, or both. Personally, it's A-rank. However, it is a close call :/.