just to clarify, im a 77 sk and have 5 aoe spells/ca's. i do lack multiple mob melee attacks (unless i go down the agi tree). i do about 900-1200dps(depending on group makeup) at lvl 77 on a single target, and can pull about 3 times that in an aoe encounter. from the looks of the new aa's that have been floating around, sk's will get 2 additional aoe attack/ taunt ca's. this is not counting the aoe ac debuff/buff and the aoe disease debuff/taunt or the pestilance spell that splits up on other mobs in range if the current mob dies before the spell expires.
i dont know how this compares to berserkers or palladin's, but i just wanted to share what i thought was the reasoning behind sk's being classified as an aoe tank. i know when i solo, i have a far better handle on aoe encounters then i do a similarly conned single target.