You do realize that setting brakes to 10:10 doesn't increase the power of the brakes right? All it does is set the F/R brake ratio to 10:10, which is the same as 1:1.
I do after reading
this.
Brake balance affects the brake force applied at any given pressure increment/travel applied using the input device ( buttons or pedal ) and the balance between front and rear wheels. Total number of the brake balance determines how much pressure ( how much the red bar is filled ) until the tire will lock up - only without ABS ( this is where most sees it as sensitivity ), and the distribution determines the balance of brake applied to each wheel within the total BB value.
Drivers who uses ABS will have a hard time to feel the difference of total brake balance value as the
assist will mask the driver from the actual brake force used, eg :no ABS BB at 9/7 = 16 - more than 55% bar filled - tire lock up likely to happen; 5/3 = 8 - more than 85% bar filled - tire will start to exhibit lock up - these were from a test with a FR car using comfort medium in a straight braking and no ABS and of course the speed of travel have a huge effect as well. I can brake harder at higher speed - above 200km/h generally, the less speed the more prone the tires to lock up.
To make it even clearer, drive with ABS at SSRX - use the 1000m distance marker as brake point, use comfort medium or sports hard, 0/0, 5/5, 10/10 BB brake from 250km/h, no gear changes full brake until stop, notice how long it takes to stop, there should noticeable distance differences in braking. ABS is used to get a consistent result.
I did a simple average test of 3 times of each BB.
Full brake force with ABS in a Corvette C5'04 premium with comfort medium, stock at 250km/h 1000m marker in 6th gear until full stop :
0/0 stops at close to 1300m marker
5/5 stops at about halfway to 1300m marker
10/10 stops just over 1200m marker
Another easy test is to get an FR car with big torque, I recommend Corvette premium, fit comfort medium tires, set BB 10/0,
disable ABS - a must. Do a burnout - holding the brake a certain level - while spinning the rear tires, then change the BB on the fly with RA adjustment, put more at the rear until you can't do burnout.
Burnout test - same car- Corvette C5'04 premium, stock, comfort medium,no ABS, 10/0 BB
Hold the brakes at 80%, rev it up in 1st gear, release the brake for a split second the reapply with 80% brake pressure - red bar filled. While in burnout, open up RA menu, increase rear brake balance one at a time, the rev will drop gradually with each increase from 3 of rear brake force, and when it reach 5,it will drop the rev completely and ended the burnout.
What do this mean ? The way I see this is that brake balance also affect the
maximum brake force applied, by adding more at the rear, the brake overpowers the driven wheel's torque.
For some reason, with ABS, doing a burnout is impossible to do, the car will simply lose power when the brake applied.
That is why even without ABS, I can still brake as deep as another driver with ABS - at the same location, with the same car and tune. I usually set my BB as high as 8/6 or 9/7, which is quite a bite and it eats away the speed so quick as long as I can maintain optimum brake force before the tires give up.
Tell the car who is boss. Driving any of these cars fast with a slight 4 wheel drift is one of the most enjoyable experiences in the game for me. 
(but BTTF jokes aside its a really good car)
