I wouldn't really give my commendation based off them asking.

I base commendations off how the players played ect.
Was the tank using mitigations/healing tools well?
Was the boss defeated fastly because of DPS? (and if those DPS were using their contribution tools well, such as a ranged who uses their mits for pulls & AOE's)
Was the healer Managing their resources well and contributing damage while not gcd healing when it's not needed.

If all else fails then i just commend the best portrait