I have said many times (and have been ridiculed for it) that APs impact is overstated.
First I will say that if AP has as long of a career, he will rival Barry Sanders, who I thought was the greatest.
THe problem with the "break away" running back is that they get little or no gain for 90% of their carries and build up their Per Carry average on a couple plays a game.
The consequences are they can't grind out the clock, keep the chains moving and wear down Ds. They also can't pick up critical yards on 3rd or 4th down or on a goal line situation. Any coach who know what is going on will not have them in on critical downs.
The best use for a back like that is to run him on first and second down and hope he breaks one. The problem is you get a lot of 3rd and longs.
The key to beating a team like that, limit the break away runs to yardage and no score by keeping him in front of you. Pressure the QB on 3rd and long and keep the conversions to a minimum.
I want to go out like my Grandpa did. Peacefully in his sleep.
Not screaming in terror like his passengers.