Hoops - Player Rankings

Sportsline.com has a player ranking system based on statistical efficiency. Based on their rankings, Jarrett Jack is the #6 Guard in the country overall. Of course the have JJ Redik #1 (PG and SG combined), so how much credibility can it have? In the center position, Luke is in the #3 spot nationally. Here are all the rankings by position:


Guards
Jack #6
Bynum #161
T-Mac #317
Elder #426
Morrow #580


Forwards
Isma'il #170


Centers
Luke #3


In addition, they have an overall ranking of all players, regardless of position:
Jack #25
Luke #139
Bynum #304
Isma'il #399
T-Mac #586
Elder #764
Morrow #1034