*looks at list of A rank mons
*sees hippo
*does a calc
Yeah, seconding the nomination for Honchkrow for S rank. You know you've got power when you can pull off this...
252+ Atk Life Orb Honchkrow Brave Bird vs. 252 HP / 252+ Def Hippowdon: 175-207 (41.6 - 49.2%) -- guaranteed 3HKO after Leftovers recovery
So if hippo has about 20-ish percent prior damage, honch is pretty much guaranteed a kill every time it gets a free swap in because hippo can't counter anymore. There really aren't any better case scenarios either, as every other decent phys wall in the tier either A lacks reliable recovery and/or is less bulky then hippo (therefore not as good of a counter) or B is hit super effectively by honch and is therefore easily killed.
I realize that being hard to counter alone is not enough to make something OP, however, Honchkrow is relatively unique for a sweeper that not only is it hard to counter, but it punishes teams for not having a counter ready because if you death fodder something, it gets a boost. Combine that with sucker punch and revengeing it is suddenly "borderline" impossible.
As a comparison, lets take banded darm. Banded darm is very similar to honchkrow in that neither of them can swap into much of anything, but if they do get a free swap in, they are almost impossible to counter due to the sheer amount of damage the swap in is going to take (in case you care, banded adamant darm has a good chance of 2hkoing phys defensive jellicent). However, once darm gets that kill, he is very easy to force out. Just send in a faster mon or your other bulky fire resist. Darm cannot take that free swap in and proceed to sweep the enemy team, making him more balanced then honchkrow.
effyouzion
"Slowbro can beat any team without Toxic"
Yeah no, this is blatantly false. First off, slowbro has regenerator, meaning he will be swapping out frequently anyway, so Toxic isn't even that good against it. Second off, what DOES beat it is a strong wall breaker, like this one.
252 Atk Guts Heracross Megahorn vs. 252 HP / 252+ Def Slowbro: 386-456 (97.9 - 115.7%) -- 87.5% chance to OHKO