Of course college is different then the NFL and it is probably a more accurrate evaluation to do YPG as a lot of guys leave after 2-3 years. Lewis, Garner, Johnnie Jones, Cobb, and Stewart are probably all ahead of him in that category.
You are correct in saying he has the most yards rushing for Tenneessee, but that isn't saying anything. I believe Eric Zeier has a lot of SEC records over Payton Manning. Are you telling me Zeier was a better QB even at that level than Manning?