Coming at you live from a failed BFD run, and the tank was a Warrior. He did a solid job of holding aggro for the most part, especially if the pulls were kept to under 5 mobs and the Mage didn’t immediately spam AoE until he was oom, cast Evocation, and then spam AoE again while running into packs we hadn’t aggroed yet trying to escape from mobs that can’t be outrun.
Anyway, AoE threat is a group issue. Warriors have the tools to get it, but DPS have the tools to get more if they’re careless.