I was in Chicago right after Benson got drafted, and a Bears fan excitedly asked me about Benson.
Here was my take on him then, and it's the same take I have now.
He was a WORKHORSE at Midland Lee. I don't have his HS stats in front of me, but I know he was their entire offense. I was at the Lee-Woodlands game at DKR. They just plowed him ahead all game long. He didn't break any huge runs, but he was effective enough to carry Lee to victory.
Then he came to Texas. He ran the hell out of the ball for 4 years here.
The "life span" of a RB is so limited, and Benson ran so hard for 8 years in HS and College, that I think he hit his peak here in Austin. If I was an NFL GM, I would have stayed far away from CB, because I would have been very concerned that he doesn't have much left in the tank. Certainly not enough to now be a workhorse in the NFL for a decade.
It's terrible that he's embarrassing himself and the University with this DWI garbage, but I think his career was in its twilight regardless.