is based upon your oponnent, if your oponent is similar to your rating, you gain less points. its better to beat a VERY GOOD player :P
i read somewhere that when you join chess.COM the rating systems is calculated in a different formula while your first 20 games... something like that :P
search the forum to find more details
Chess.com uses the Glicko rating system.
When you play higher-rated players a win has a big affect on your rating and a loss has a small effect. When you play lower-rated players it's the opposite. The goal is not to reward or punish you, but to determine your true rating.
A few games ago your rating was 1150. When you beat jbury(896) you gained 10 points. When you lost to nyynygfan(1059) you lost 27 points. Make sense now? :)
Can some one tell me how the points work for a win and a loss. I see that som wins you only win 6 points but if u loss the game you loss 22 points????????? I am not sur how tis works???