I think Gray is a better football player than Martinez. I think if you put Martinez on the Gophers, we would be quite a bit worse. I think if you put Gray on Nebraska, they'd be a hair better.
IMO, Martinez looks better than he is because he is surrounded by a lot of talent.
Vandenberg might be the best passer returning next season. He will miss McNutt but he still has some good WRs around him.
Kain Colter's looked good.
Caleb Terbush had moments.
Robinson is the cream of the crop, I think followed by Vandenberg, Gray, Colter, Braxton Miller, Martinez, Terbush...
I obviously don't have an opinion on the guys who haven't played much.