I've only had a couple issues with threat so far, usually in AoE against prot Warrior. But that's probably just me being awful. Otherwise I have a hard time staying lower on threat when I'm not currently tanking.
Yesterday had my hands on 489 weapon. All threat issues are blown away same moment. We are very dependant on weapons dps stat after all while other classes can bust thir str.
91 lvl Elit Alcoholic Ирез
No, overall our damage seems to be significantly higher than that on other tanks.