Bear tanks are fine this tier. Last tier they were fine except for 25H (and even then were often fine in the offtank role; for instance they were fine for tanking Bats on HTortos, even if a monk kiter was infinitely preferable).
They've done a good job of tank design this expansion. Even when some tanks have been obviously superior (Monks and Paladins for most of the Expac), the difference between them and the other tanks hasn't actually bottlenecked anything, and only tends to really show in 25H (survivability) and 10H (DPS, since tank DPS is a good chunk of raid DPS, and certain tanks blow others out of the water). That's specifically where Druid had troubles last tier, as many of the fights had primary mechanics that gave precisely 0 shits about Druid's "MASTER OF ARMOR!"/Burst Evasion schtick.
The only real issue I've had playing each of the tanks was that Warrior felt really lackluster this expansion pack. Like, its effectiveness was fine, it just felt silly pushing 3-6 more buttons than the other tanks to get the same effects. Needless added complexity/finger strain. And having to actually gear for defensive stats unlike Paladin/Monk/Druid was a sad feeling with how Defensive Stat Ratings scale this expansion.