The offense one would have put that defense on the field more, so they may not have been as good with an extra 5 minutes per game on the field.
Two, the offense turned the ball over so many more times that it isn't a given the 2012 defense would have just shut those teams down.
Three, Golson personally had four pick sixes, at least 2 turnovers inside the 10 yard line and a sack against ASU inside the 10 on 4th down (losing 20 yards or so versus just throwing the ball away or hell throw an INT attempting to pull off a miracle). The 2012 defense could not have stopped any of that.
Four, the 2012 defense could not have stopped Brian Kelly from going for 2 when you are supposed to go for 1.
Five, the 2012 defense would not have stopped the I think 6 failed holds on FG or extra points this year and the points taken off the board as a result.
The net is I figure we would have lost 2 or 3 games this year even with the 2012 defense becasue in 2012 we barely won 6 of our games when we didn't have an offense scoring points for the other team.