I didn't look at all the screenshots but the one I did see, the top damage one, had 2 million + damage and no kills and looking at the team, there were suspiciously few kills. I believe the most kills someone had was 3 - you don't do 2 million damage and get no kills... unless... you come to some type of agreement that you'll just do damage to each other and heal so you could get the high numbers.
Stupid and pointless.
-Godless