Peterson > Dickerson
It's a shame that AP didn't get the record. But if you were to measure the achievements you would have to conclude that Peterson's year was much better.
His average is a mind-boggling 6 yards per carry. He got within 9 yards with far less carries and against stiffer opposition.
Erickson was a fluid straight ahead upright runner blessed with deceptive speed.
But AP is like the second coming of Jim Brown. He has it all. He runs with power and heart. He really is a treat to watch. And he is a much better runner than Erickson in the purest sense.
And to do what he did after that knee surgery is miraculous.