I have a buddy that has the exact opposite effect. If he kills on way he gets all blues if he skips he gets a purple at the end. Now when this happens (if he stops to kill - me and another get 1 or 2 purples FROM HIS KILLS and he gets all blues). From what I can tell... 1. YOUR NAT connection COUNTS! 2. There are some people that drop legend for me so I try to play more with them 3. some people I play with and get squat (greens is what I get) all day and others drop blues form me.