Thanks for all your responses. I can see how low population can explain some of these problems, but I'm still not entirely convinced.First, I always lose/win about 12-14 rating points - shouldn't those be inflated/deflated if the odds are stacked towards one side? And in the few odd games my team does manage a come-from-behind victory, I have not noticed a real difference either.Second, I had a pretty stable rating for weeks at around 1250. Then I fell by 200 rating points in a single day, stayed down there for dozens of games, and then suddenly got swept up again. 200 ratings is HUGE, if it's even remotely similar to ELO.Finally, my rating is only average. The matchmaking algorithm should not run into population problems in that bracket constantly, I'd imagine. Edit: Also, if you just put a platinum player on both sides, that should at least kinda even things out, shouldn't it?