[quote=@Rilla]
Essentially. Yes. 

A person would win 200 points from someone with 2000. 250 from a person with 2500
[/quote]

It would work a little better if your own points were taken into account, so in that example if you had 1000 points and fought someone with 2000, the difference being 1000 points, you'd be rewarded with an extra 100. 

Otherwise you could have two or three very high ranked players essentially fighting each-other and gaining masses of points, and I don't think someone ranked 1900 for example deserves an extra 200 points for defeating someone with 2000.