Thank you for an excellent reply.
I will look into my strategies for TFB. If there is a video from a tank POV please point me to it. all i have seen is people tanking on upper platforms, so naturally that is what i did.
I must repeat that unmitigated dmg is a joke, especially when tanks have it so much harder in gearing up (since healers and dps both use crt/power while we use 2 entirely different sets of gear for tnaking and dps)
I don't have one on-hand, but I'll record and post one tomorrow from the perspective of a shadow tank when we do our HM TfB run.