Sorry about being defensive. To many dislike when flaws in their reasoning are pointed out and I jump at your reply without fully reading it.
Yeah that would be the best way to see the actual difference in DpS and DTpS.What could be interesting is doing two runs with the same team, one where the tank stays in tank stance, and one where he stance dances. We'll see how much damage he takes, how much DPS he does, and how much DPS the healer loses as a tradeoff.