In my humble opinion for PVE dps, I'd have to say in 522 gear you're looking at..
Top tier: Unholy DK, Assassination Rogue, All Warlocks, Fire Mage
Middle tier: Fury Warrior, Frost DK, Shadow Priest, Boomkin, Survival Hunter, Feral Druid, Subtlety Rogue, Ret Paladin
Low tier (not BAD classes by any means, just by comparison): Enhancement Shaman, Combat Rogue, Frost Mage
Don't bother: BM and Marks Hunters, WW Monk, Arcane Mage, Elemental Shaman, Arms Warrior
Fellow raiders, how do you feel about what you've seen on meters this patch? Do you agree or disagree with this list? Would love to hear what you think.
(I personally play a 522 fire mage and am 12/12 normal ToT just so you know I'm not talking out of my backside, making crap up..)