how many points do you get for a win?

If you play and beat someone 500 points beneath your level, sometimes you can only win 2 or so points.
Same deal for loosing. And for drawing games.

If you play and beat someone 500 points beneath your level, sometimes you can only win 2 or so points.
Same deal for loosing. And for drawing games.
So what determines an 8 point vs a 9 point win when a draw is expected???

I have two accounts but one ID get 7-8 points and other one get like 20-30.why??
Is this normal or what?