For every kill in Crucible there has to be a death, this is how they try to combat pub stomping, no doubt in my mind. If players keep sucking over and over in every match they stop playing. But I think whatever this system is, it's only relative to certain game modes, it's why Trials and Ib feel so different match to match. But there is certainly something to it, the results match to match fluctuate too high and too low to be explained away by changing maps and loadouts. Meaning it's not very subtle, it's drastic fluctuations. It's the game literally saying, no, no that's enough, you need to come down now. That's exactly what it feels like.