i'm not sold that the rankings we see are the same order if ou lost the bigxiiccg. i think there's a better than 50% chance they put osu in over uga for 2 reasons.
1 - they'd be under a tremendous amount of pressure to do so (imo it'd be the right call fwiw)
2 - otherwise they have to put a rematch of bama/uga for rd 1. and i don't think they'd do that. it'd have been easier to have bama #2 and uga #4, but they'd have to come up with some excuse to move bama down, and i don't think they had it.
this year, the committee had it easy. had 3 p5 undefeated teams, so that's easy. osu had a massive wart, uga had 2 losses and if in would be in a rematch (not ideal), and ou had just gotten redemption for against the team responsible for their lone loss (which was a 3 point loss where they had -3 turnover ratio), so they technically beat every team on their schedule. it gave them an easy road with minimal controversy.