QB determines how good a team becomes. All the really good teams had great QB play, Andrew Luck, Bridgewater, and Johnny Maziel. Texas AM, Michigan, and TExas still searching for the one. Harbaugh knows this so that why he is getting 2 4 stars QB each year in hopes of finding the one.
Rutgers never got close to finding a great QB but was always hindered by the OL another reason the great ones wouldn't come here. We probably were 1 QB away from having a great season since I would expect 2 extra wins with the right QB.