Ive talked to several peiple who have this idea that auburn would jump straight into the title game if they beat bama. The level of delusion here is amazing. No chance an undefeated ohio state gets jumped by a one loss sec team, the idea is hilariously implausible.
It would probably be closer than you think, and it would be more than just beating Bama. The ideal situation for Auburn is to beat #1 Bama, and follow that the next week with a win over #4 Mizzou. Computers already like Auburn, only Mizzou comes close as far as one loss teams go. It would also help that these back to back big wins would come at the end of the season and be fresh on voters minds.
If Mizzou loses to A&M, Auburn would be screwed because USCe wouldn't be as big of a win in the SEC championship, and if USCe loses to Clemson it wouldn't do much of anything for them.
So basically, they hardly control their own destiny because even if things go perfect for them that doesn't mean they're in, it only gives them an outside chance. But it doesn't matter anyway because Auburn isn't going to win this week.