Vengeance and Brewmasters are two vastly different tanking specializations. Everything from their active mitigation to their fantasy are at odds, but despite that, many brewmasters are thinking of trying the new cool thing, so here is how they compare.
(This is not a guide that’s going to tell you what class is objectively best. That changes with balance tuning, and I’ve always encouraged people to play what they want. You’ll do the best playing the class that you’re motivated to master. This guide is just to help you figure out what that class might be.)