As far as I'm aware, he would have had to tab out and check our DPS before acting that way. He went to the effort of looking at the DPS numbers before telling the DRG that his DPS was bad. I honestly believe that he was just trying to act like the tough guy with the 'you suck, you're getting kicked' because he had some numbers to go by to back him up. If he didn't have those, he probably wouldn't have even noticed.