In fact none of them will be, because it's computed by analyzing the rolling last 7 days, and each accounts "ranking" is whatever their ranking was at the end of that period (i.e. "now," more or less).

Basically I'm not sure why you're saying that leads to a bias toward "slightly above 100."

Ohh... unless you meant slightly above a multiple of 100. I see now. Because people stop playing when they hit a milestone, right.