Hi there! It looks like FuryBladeborne's answer just above that links to our most recent live stream might help to better clarify where the "damage done" modifier comes into effect - in this case, when multiple groups are tagging a mob.
I'm going to go ahead and close this thread out now, but please don't hesitate to reach back out if there's anything further we can assist you with!
I'm going to go ahead and close this thread out now, but please don't hesitate to reach back out if there's anything further we can assist you with!