Are you sure you lost points on that win and not in any other game ?
Tell you what, challenge a lower rated player, and, on the beggining of the game check to see how it will change your rating if you win \ lose
If you see that you will lose points if you win, simply abort the game before making your first move
This would seem very strange to me if so.
I am up for playing anyone of any rating just for the fun of it, but would think twice if I was to be PENALIZED for simply playing a lower rated player.
Now LOSING to a lower rated player I could see losing a massive bunch of points, but not winning....thats just dumb.
My rating seemed to drop nearly 100 points after beating a lower rated player! A bit odd, no? The game before I gained nearly 100 points from beating a much higher rated player.
Its frustrating to beat someone 1800 and then play someone whos 1000 because thats what they're here for, to play, and then get everything I gained from beating the higher player taken away for a WIN....lol.
Am I missing something?