It depends on what you tank. Personally I try to maintain 1200+ BV, 30k+ hp, 19%+ dodge, 25%+ block rating, 26 expertise, over 2800 AP etc. You can't get them all but frankly if you can gear up in a way that you don't have wild swings in stats then you're in pretty good shape.
You shouldn't typically wear gear that stacks one stat enormously over another, we can all get 31k+ if we go all stam but we'll lose a lot somewhere else, unless the encounter calls for it balance is the way to go imo. Not directly answering your question since I have no idea what you typically tank