That's the thing about comparing numbers, or numbers in general, they never really tell the whole story--and it goes the both ways. For all of the 20-5-5 hoopla, I don't really think anyone can say with a straight face that Tyreke will be as good as Oscar, MJ and Lebron. Oscar is probably the most underrated player in NBA history, no one really talks about his accomplishments enough, MJ-there is really no touching him and Lebron is just a freak of nature and the type of player that comes around once a generation.
As Supes just pointed out Steve Francis was a tremendous talent but for one reason or another never broke through that ceiling. The thing about Tyreke's game is that he is just so raw and plays the game almost solely on instinct--its only natural to assume that he'll get significantly better as he gets older. One of the biggest differences in his games is that he lacks the athleticism that so many greats and borderline "great" talents have. He plays below the rim, yet gets scores purely on lay-ups. He can't just beat his guy and then dunk on him like so many players do or have done. A lot of players rely a lot on athleticism and quickness, qualities we know Tyreke does not excel in. I see Tyreke differently he has the "craftiness" that you see in veterans (amongst other qualities)