What is a KS is debatable in the game. If you created the situation to make your enemy completely defenseless (like stalling) and an ally comes far later and kills him, he never took any risked, is it a KS? in my opinion yes. Ditto when a tank is deliberately taking fire to gain a temporary advantage and get a kill.In the end it's all statistical and if you don't like it, there is the TK option in air.At the same time, if someone sets an enemy on fire but doesn't make sure to incapacitate it, if this enemy kills an ally it should be considered TK? in my opinion yes. Killing incorrectly can be worse than KS.Of course, if it was to defend another or it was several against one, then there's no KS argument valid. The problem is that too often in many vs many too often everyone focuses on the weakest enemy and letting all the allies to die. In that case it doesn't matter if that's KS, it directly shows incompetence off all the group.