An interesting post here from the California Golden Blogs on a different way to calculate quarterback efficiency.
It's worth it to read the whole story because it breaks down every FBS conference and has a bunch of cool graphics, but I'm just going to steal borrow the part that focuses on the Pac-12.
The writer, Berkelium97 (is he a Klingon?), feeds numbers into Utah State sports economist David Berri's "more intuitive formula that addresses some of the common criticisms lobbed at the passer efficiency rating." Berri calls his formula the "QB Score" and it looks like this: QB Score = Total Yards - (3 x Plays) - (50 x Turnovers).
The difference in QB Score and college efficiency rating is this:
The traditional passer efficiency rating tends to take on a "more is better" approach: if players throw a bunch of TDs and hundreds of yards, they can get away with a fairly high turnover rate. Berri's measure has a different philosophy: if you generate yards and avoid turnovers, you will be rewarded.
So here's the list of Pac-12 quarterbacks, ranked by their "QB score," which you can compare to their efficiency rating.
You can see one reason folks at Arizona State believed that Osweiler would have beaten Threet out this spring, even before Threet opted to retire due to recurrent concussions.
No surprises with Mansion and Prince ranking toward the bottom -- they also did for efficiency rating. No surprise at the very top either, with Luck and Thomas. And the Locker critics probably will enjoy his mediocre tally.
It's surprising that Scott is ahead of Foles and that Cain is ahead of Wynn, though both the Arizona and Utah backups put their numbers up with a far smaller sample size. Further, guess here is that Colorado fans probably didn't expect Hawkins to rate so highly -- ahead of Locker and Barkley!
Barkley's number is surprising, particularly considering he ranked third in the conference in passing efficiency and threw 26 TD passes, but the Golden Blogs' analysis says this: "he finished in the bottom half because he does not generate that much yardage and he throws a fair number of interceptions. He's much improved over last year, but he still has work to do."