It's funny you mention Adrian Peterson-- I'd say he Peterson is definitely the more talented of the two (as many modern day players are more talented to their yesteryear counterparts), but Peterson is like a modern day Jim Brown-- both guys tall, physically imposing backs, but Brown was 15 lbs heavier. And while yes, Peterson does it against better talent, that doesn't make him more dominant-- a relative term used to show how much better he was than his peers and his competition. Just to keep things short, Jim Brown held the rushing title 8 out of his 9 years in the league. Peterson, 2 out of 6 years so far meaning he'll likely never touch anything close to that record. So to recap, Peterson may be the better player, more talented, more explosive player, but he didn't dominate the field of play like Brown did.