Hypothesis: Tier qualification games attract trolls

To test this hypothesis, sort games played into two groups: 1). qualifying round games 2). other games Test the two populations to see if their win/loss curves are drawn from identical populations.

The two outcomes: 1). Populations identical; hypothesis is a false positive due to brain recognizing unusual and ignoring commonplace. 2). Populations differ; hypothesis is true and therefore the qualifying rounds are problematic to sorting the player base.