What is a barb doing to get kill count if they're not using DPS? Casters with Wall of Fire in the lower level quests aren't doing DPS?
With this reasoning, the best party would be composed of 6-12 raging barbarians, correct? Who needs a healer, right?
Proving that you are correct with data does not remove the fact that something is griefing. Griefing has nothing to do with whether you are right or not.