You have logs of the kills but maybe someone put out a KOS on grens, maybe grens dealt damage to BrokeN but then ran away and BrokeN didn't find them until then, The rule is in place for a reason and as Kurze said, Unless you were following grens around from the very start there's no way you could know if something happened to say the least in my opinion the proof you have provided is insufficient to prove such a situation, We can't see what happened during the game, we can't hear the voice chat to hear if there was a KOS put out on grens