The problem you run into when debating who's better, Clarett or Beanie. Clarett only played one season. They also had completely different circumstances through their careers. Clarett was a true frosh when played and also was the #1 RB with no one standing in his way. Riley, Parker, Hall and Ross were all soph's that had yet to show any abilities better than Clarett. However, Beanie was forced to sit behind Pittman, therefore, he would have never had the same chance to get the same yardage in his first season as Clarett did. Then you compare the second year of Beanie with Clarett - oh wait...Clarett only played one season!
They have the same build, and same toughness. Each had their problems - Beanie with fumbling early on, Clarett with his shoulder. If we are going to compare them - which is nearly impossible - you would also have to factor in Clarett's injuries.
Bottom Line: Both are great RB's but you can't compare them equally.