mmh , if someone is measuring the dps with a 3rd app , id say report and move on :P

I mean u can very well see if someone is not performing as they should , and thus kicking someone out of the group afterwards.

But if someone says ur doing 50 dps to less as Warrior and kick you out because of it, id just report and move on.

(well i didnt reported anyone yet coz it never happens to me , but ill probably just move on and blacklist this people :P )