An unsurprising, but important statistical correlation. Here are the top ten most efficient offenses and their QB's corresponding QBR and rank:

1. Baylor 93.4 - 17. Seth Russell 77.8

2. USC 93.3 - 2. Cody Kessler 91.9

3. Texas Tech 92.9 - 3. Patrick Mahomes 87.7

4. Stanford 87.2 - 6. Kevin Hogan 85.9

5. Ole Miss 86.1 - 7. Chad Kelly 84.2

6. TCU 85.7 - 15. Trevone Boykin 79.7

7. W Kentucky 84.7 - 4. Brandon Doughty 87.3

8. Bowling Green 83.7 - 19. Matt Johnson 77.0

9. Navy 82.8 - 31. Keenan Reynolds 70.5

10. Notre Dame 81.7 - 21. DeShone Kizer 75.3

All but 1 have QB's in the top 21 in QBR except for Navy who is at 31. Which is still fantastic considering their offense.

Here is OSU:

76. OSU 44.8 - 99. Cardale and JT 41.7

Obviously offensive efficiency takes into account more than just QB play and turnovers are hurting, but this comparison shows a lot. Whoever the starter is, there needs to be improvement at the QB position.

Sources:

http://espn.go.com/college-football/statistics/teamratings/_/sort/offEff...

http://espn.go.com/ncf/qbr