There is track speed and then there is “game” speed just like how some players don’t look as good at practice but when the lights go on, they play at a higher level. Aiden shows extra juice when given a shot, I’d like to see him used more in the backfield particularly out in the flat with a short pass while one on one with a LB. Abu may be faster but for whatever reason Abu has the ability to make the wrong cut and pick the hole that is closing.