I was teamed with my alt, (a 200 agent), another MA, a MP, a trader and an engi I think, wasnt' paying much attention.
I did one long inf hard, and here is the top damage dealers:
Noobastank ( 7.517.956 / 169.680 / 1455 / 1033 / 70% / 13.060 )
Youmissedme ( 5.508.390 / 124.320 / 1347 / 880 / 65% / 13.399 )
this includes one break when a dude died.
Prior to the break I was at 194k DPM.
169k DPM over about 45 minutes including a couple breaks.
Next highest Dmg was the 219 MP with 2.5million.