I don't get hung up on comms, and people really should not look at it as they did a bad job if they get nothing. Like I woke up early this morning to do my expert roulette, DPSed the crap out of Fractal as WHM. Got two comms. I did the same stuff a few days ago in roulette and got none.
Some people are in a hurry, or just aren't impressed with me using most of my MP for some deeps fun. It is what it is. Maybe it was a DPS like a MCH/BRD that had the right buffs up, or the NIN that gave goad to the tank as much as possible. Things like that are also examples of DPS playing "optimally" just as much as a healer doing DPS whenever possible.
Even when I tank, I may just get what is likely the healer's comm as long as I don't make them work hard, lol. But the others probably give it to the healer since they did some deeps to speed things up.
