Zap your arguing a small point, which is pointless. your are correct in a 100km/h striaght line brake test, they will be no difference, if some will be f*ckall. however, go to any other point in which you cant activate asb or lock the brakes with the smaller brake package, say 140/160km/h than bigger brakes will make a difference, or heven forbid you wish to brake twice, than the bigger brake kit will make a difference. its like saying a bigger intercooler makes no difference*, *when tested at 2am on a 4degree morning on a dyno run upto 47km/h your been pedantic.