User blog comment:Singingwkd/About LP/@comment-6061249-20130603201118

If points gain is increased by win rate, then that explains why i get +20 points per win and - +/- 10 per lose. I have played only less than 30 ranked games, but i won 70% of them.

Also, if this is true, keep playing to increase your rate. You'll gain more after some time.