It is written by one of our own.
O.J. Mayo carried the load for USC, ranking number one on the list with over 28% of his team's offense. This could be a clear indication why he struggled so badly in many of the efficiency categories, especially when considering his freshman status, the strength of the Pac-10, and the amount of minutes he was forced to play.
Mayo ranked horrible in most the numbers, but at the end the usage rate could explain why. Just an interesting thread for stat geeks.