Skill/Potential to play college QB means pretty much ranking them on their careers to me, with the possible exception of active players (Ertz). I can't give anyone credit for anything they didn't show on the field. Ertz is more a projection to where he will rank at the end of the season.
1. Bishop
2. Klein
3. Roberson
4. Freeman
5. Ertz
6. May
7. Beasley
8. Waters
-BIG GAP-
9. Miller
10. Kavanaugh