I kinda have to agree. Isn't the main purpose of a tank is to do low damage but high surv? How can it be that a tank with Black cleaver able to out dps/be on par with bruisers? That's kind of ridiculous.
I shouldn't have to run away from a tank at 50% hp as an assassin because he managed to burst me down from 100% hp.
They disable and disrupt and displace and peel and lots of other things. Bruisers are just damage dealers that can take a hit. Thats not a tank. Call it a tank all you like but then you wont understand why the "tank" is able to roll you