Thx, you are right gaoesa. I changed my last post (see the bold) - I was thinking about KR while I wrote PRW, my bad. I'm personally not convinced that KR is accurate. It is still better than nothing, but it won't reflect action where many players are involved (ie, you're fighting an enemy, almost killed him, but a teammate will "finish" the kill). Only the victim and the player that makes the kill are taken into account. Not really - as you said, PRW is looking only at the outcome of a game while KR looks only to individual 1vs1 combat, so if you are the best killer on a server but a poor objective player, you might end up with a high KR, but a low PRW.