Fairly easily.
Virtually every statistic you can think of supports Thornton.
- For starters, he actually has a sample size of minutes and games to back up his data. Jimmer does not. But moving on.
-Thornton is more efficient on more shot attempts. His TS% and eFG% are both higher. This is in actual minutes and p/36. Very important, considering these guys are on the floor to score.
-Thornton turns the ball over far less than Jimmer while having a higher USG%. Thornton insanley low TOV % is actually one of his strong-points. He's consistently in the top 10 for not turning the ball over.
-No one will ever mistake Thornton for a great rebounder, but he's not nearly as pitiful at is as Jimmer is.
-While neither can defend, at least Thornton, with his athleticism, is capable of being a decent defender.
-Finally, Jimmer is a 6'2 SG with limited athleticism. There's not a whole lot of upside there.