Originally Posted by slowoldguy
I would say that stopping distance from a given speed can be measured, but even then tires, road surface, and road conditions are all variables. Brakes can be grabbier than I like. Brakes can fade. Brakes can require more effort. Braking can be non-linear.
So while shortest stopping distance from a given speed is "objective", that is just the beginning. There are important "feel" considerations beyond that. As an example, brakes suitable for racing would probably not please me on the street even though they would be objectively "better".
Of course there are other factors in stopping distance besides the brakes on a vehicle. And we are not talking about brakes for racing here.
I though the question was about brakes on a particular motorcycle.