I'm leveling all three healer roles from 60-70, and I have made an interesting observation. I pretty much have the same skill level on all three roles, but for some reason I end up getting the most commendations on AST, then WHM and SCH. The result of the run in terms of dps or healing output on parse is fairly equal. Yet I mostly get 1-2 comms on AST, maybe 1 comm on WHM and almost never get jack squat on SCH.

I know that this is ultimately inconsequential but I just think its interesting that non-healers tend to favor the AST when deciding to give commendation to a healer.