Here's my take on how the game would go.
-Early on, the SEC would have to adjust defensively to the fast-paced spread that the All-Americans will run. They'll allow a touchdown early, but settle down by the end of the first quarter.
-The SEC offense will be very hard to stop, with a steady diet of five and six-yard runs wearing down the defense. That will open the door for a downfield passing game led by McCarron.
-SEC's lethal front seven will be, for the most part, neutralized by the rest of the nation's fast-paced offense centered around short passes. Clowney, Jones, Mingo and company will get a few sacks, but Geno Smith will do a good job of keeping plays alive. Against one team, like Oregon or Oklahoma, an SEC defense may be able to stop this kind of offense. But with five or six elite playmakers on the field at all times, it's impossible even for the mighty SEC defense to completely shut down the offense.
-Regardless, college football is all about controlling the line of scrimmage, and the SEC offensive line simply will not move. The All-Americans will try every kind of blitz in the book, but between the strong offensive line, tight ends, and great blocking backs, McCarron will be untouched.
-The game will be close, perhaps even in the All-Americans' favor, through 30 minutes of play. But after halftime, the SEC's ball-control offense will take over, and McCarron will find a wide open Cordarelle Patterson for a back-breaking 75-yard touchdown pass to seal the game late.
Final Score: SEC 31, Everyone Else 21