Must be a difference since they jump thru hoops to make multi-piston calipers, w/ 6 pistons are now de-rigour in Corvette world, plus wide open wheels to show them off in bright colors. Fade comes from the pad material melting. While the rotor temperature is part of it, if the pad touches stronger at just one point it will heat up there more. With more even pressure all over the pad, all points stay closer to the same temperature and also conduct heat into the rotor better, where it gets dissipated into the air (kind of like a rotary fan).
