Shaw averages fewer than 15 passes per game, but he completes more than three-quarters of his attempts. McCarron has thrown 12 touchdown passes without an interception. The SEC's other two unbeaten quarterbacks are Florida's Jeff Driskel and Mississippi State's Tyler Russell, who have been picked off just once each.
In the SEC, it's nice for a quarterback to be prolific, but it's better that he be efficient.
And those defenses that do the best job of limiting that efficiency often end up celebrating in January.