If we beat Bama they'll have one sec loss like us. But we beat them so we go. We need auburn to lose 2 or auburn has the tiebreaker ahead of us. Of course the sec office may have passed a bylaw that Bama wins all tiebreakers and I wouldn't be surprised.
Auburn is a non factor in that scenario if they lose to the gumps. IF, and that's a huge if, LSU should run the table both LSU and Bama would be 7-1 in the SEC and the Tigers would go to Atlanta based on head to head competition.