Actually, 2v2 is 12%, 3v3 is 8% in my code. Maybe I have it wrong... Where did you get your values from?
1v1: 24%
2v2: 12%
3v3: 8%
4v4: 6%
Crap, my bad then.
Looking at the doctrine list, I assumed it was in the opposite order. Should have known better.