ive done this now both on my merc and assassin. didn't use cc for either. if you cant keep the tank up then its either not a true tank just a dps that is using the tank abilities or your a bad healer. the heroic has nothing wrong with it
The thing that stopped me on this heroic is that while I have around 3500 health at 21-22, the mobs in this heroic have at least 15K each.
I think most people who fail are either too new to mmos to know that they have CC, or come from WoW, which is a faceroll. They think this is going to be a faceroll or don't know how to play.
Either way, I have stopped relying on other people for my game experience, and am just doing the single player content.
I hope they don't change the difficulty, and the players realize how to play, and it is not just going to be a button smashing event.