First of all you are using fps targets.
If you want to see how close to 100fps, one card is you can do it with:
Method 1 - Average FPS in numbers.
(FPS1+FPS2+FPS3+FPS4)/GAMECOUNT = AVG GAME FPS
This is bad since the average of (400,5,5,200) is 152.5, which is 52.5% above 100, but it...