If i remember correctly 60 and 40 is 100... using front brake lever only.. Using front, and back will still only give you 100%. The problem without having ABS
on a bike especially as big as this one, is most riders will tend to lock the rear brake in a panic stop and start a skid.. ABS prevents that AND applies both brakes at the same time
for the best stopping distance for even inexperienced riders.. Some older sport bikes (read ****** rocket) will do an unintended stoppy with a handful of front brake.
ABS prevents that too. I'm 75, and just dont have the perfect reaction time anymore in a panic stop situation, so i keep the ABS on all the time and two fingers on the
front brake lever all the time.... The front tire has two discs that are larger than the back because it does most of the stopping power.