I like PT John's rankings pretty well, but they're definitely up for debate. I think Zapdos is probably the hardest to place and Snorlax is the easiest. Zapdos doesn't look top-S rank, but between middle and low there are a few things.: Why it could be middle: --The most versatile mon in the tier. --Offensively, only Mienshao has it beat in off-the-bat strength. --Great speed and balanced defenses let it serve as a utility counter and also provide offensive power to the team. Why it could be low: --Stealth Rock-weak. --Can't sweep quite as threateningly as the rest of S-tier, unless it runs Agility, in which case it sacrifices its early-game utility. As for Snorlax... You're going to have to provide a better justification to rank Snorlax lower than top-S, because "fighting weak" doesn't cut it. All of the other Pokemon in the S tier are easily KO'd by multitudes of moves on the opponent's team, while outside of Escavalier's Swarm-boosted Megahorn, a high-powered physical Fighting move is the only thing that can OHKO even offensive Snorlax 100% of the time-- and that doesn't even cut it if it gets a Curse boost. I think it's hard to argue with Snorlax as the best Pokemon in UU for these reasons: --It defensively at least checks roughly half the tier, irrespective of the set it runs. --It hits incredibly hard when equipped with a Choice Band. --It is the best phazer in the metagame. --It's a threatening sweeper on offensive and defensive teams, breaking walls early on in the former and walling early game and working as a comfortable win condition in the latter, even taking the strongest Fighting attacks at +1 Def. It's the best defensive poke in the tier and excels at all the roles I mentioned above, and it fits very easily onto teams.