Overhyped?

Is the quarterback derby really that important?
If you look at the Pete Carroll era, it looks like you can just plug in whoever starts at QB and the numbers stay fairly similar. Whether it’s Aaron Corp or Matt Barkley, would the numbers change much next year with veteran receivers and a veteran offensive line?
“We don’t really ask the quarterback to do that much,” said a former offensive coach.
Last year probably proved that statement, especially the Cal game.