This post was made a while ago but just to clarify: The TA gain is an rDPS of 842. It's a sum of the gain each individual person got. Dividing it by the number of players is just giving and average rDPS/Player number, which isn't actually relevant. Even if you just doubled the piercing gain from having the SMN on MCH it still wouldn't quite touch TA in terms of raid dps gain unless somehow MCH made less use of TA windows (which doesn't make sense because that's their wildfire).