Curious in all this discussion no-one has mentioned the use of Thrust Reversers in combination with autobrakes. I assume the airbus types do as Boeings and reduce the braking with T/R activation. In my various airlines there was a mixture of steel & carbon brakes. There was also a mixture of auto-brakes and idle T/R, and auto-brake for the landing distance planned and use of 2nd detent. Thus I think there is more to the topic than just brakes.