This fight is hard even on normal. We just managed to do it on normal and i had to get my arcane resist gear for that. 244 arcane resist i had and to be honest, he could not hurt me at all as the tank. I even had some bit of a aggro problem since i generated so little rage! Big difference from before i put my arcane gear on!

With that resist, the healer could keep us all to full and at the last 17000hp, we could burn him down.

We had a prot warrior(me) in arcane resist gear, 2 hunters, a holy priest and a warlock.

The hunters and lock were on the adds so i just concentrated on keeping the big guy at the same place.