In a normal landing, the engines reverse thrust after touchdown, which helps preserve brake life. In an emergency, the brakes are fully applied while the engines are cut to idle. I don't know if there is even time to reverse the thrust (or if they did in this case).
In addition, the plane is much heavier during a rejected take off. Loaded down with all that JET-A, the brakes need to absorb a lot of energy to stop the plane in a hurry.
Originally Posted by
ijgordon
Obviously, in this case, it was UA's fault.
More specifically, SHARES is at fault!!!!