How good are the brakes on the R8?

I am asking cause in a few magazines R8 gets a 60-0 braking in 115ft, where the new M3 got 100ft at the same test. I also saw magazines doing the 60-0 for the R8 at 103ft. The 911T gets also about 100ft. The new 135i gets 109ft.

Is it more like 115ft, or 103ft? And why is the M3 better? I suppose any car can lock the wheels, the power in the brakes is enough for that even in a Honda Civic, so it has to be about something else: tires, chassis? Are the tires in the M3 better than? Or is just cause the front tires are wider in the M3 (245) than in the R8(235). Why is Audi letting this slide? The brakes are extremelly important in a car, especially when it's considered an supercar/exotic.

The R8 brakes work best when they are warm.