Generally AoE (controlling/training groups of enemies) is what people are referring to if the bear comes up short in a tank comparison. There aren't a whole lot
of situations in the current dungeons or raids where a group of adds is super dangerous to a bear tank, but then of course that may not be the case for every tier, so it isn't a consistent sell. And that means the idea is in peoples heads that 'bares r bad' regardless if it actually matters for the content they're doing or not.
In 4.1 It looks like our AOE threat may be improved a lot. AOE mitigation looks unchanged.
The Swipe cooldown change should be helping quite a bit with AoE threat come 4.1. We are also considering some very simple changes to Savage Defense to help it provide some better mitigation when AoE tanking.