Its been floated out there on Reddit but what do you do under this scenario?
ACC Champ: Undefeated FSU
Big Ten Champ: Undefeated Michigan (or Ohio St)
PAC 12 Champ:  Undefeated Washington
Big 12 Champ: One loss Texas
SEC Champ: One loss Alabama
Not sure why people think Washington will win the Pac-12.  Oregon should have won their matchup if not for some poor coaching decisions.  Oregon demolished Utah on the road 2 weeks ago while Washington only beat Utah by 7pts at home.  I expect Oregon to beat Washington in the Pac12 championship.  That would make an even more interesting scenario.  
ACC Champ: Undefeated FSU
Big Ten Champ: Undefeated Michigan (or Ohio St)
PAC 12 Champ:  One loss Oregon
Big 12 Champ: One loss Texas
SEC Champ: One loss Alabama