A 12-1 LSU would have a better resume than a 12-1 UGA, aside from the H-2-H thingee.
As far as avoiding a rematch is concerned it wouldn't matter unless tOSU or Clemson also lose.
I think that if tOSU, Clemson, and UGA all win the playoff rankings would be:
- Ohio State
- Clemson
- Georgia
- LSU
If the committee agrees with you and puts LSU ahead of UGA anyway it still doesn't create a rematch, it just rearranges the matchups.
The semi-finals are in Atlanta and Tempe and #1 is guaranteed NOT to be at a geographic disadvantage. Thus, if Ohio State is #1 they will not be in Atlanta against a team from the Southeast (Clemson, UGA, LSU) so whichever of LSU/UGA ended up 4th would play tOSU in the Fiesta Bowl while the other played Clemson in the Peach Bowl.
Assuming Ohio State wins, if they get Utah that game would have to be in Atlanta because they would not send #1 to Arizona (a state that borders Utah) to play #4 MUCH closer to #4's campus.
Assuming that Ohio State, Clemson, and LSU win, the fourth team would determine the location for both games but that is dependent on the committee not leap-frogging LSU over tOSU based on LSU beating #4 UGA while tOSU beats #8 UW.
If LSU did leap-frog Ohio State then you have to assume that the Tigers would get the Peach Bowl (against either OU, Baylor, or Utah) while tOSU would get Clemson in the desert.
If Ohio State stays at #1 then I would assume that they would get the Peach Bowl because any plausible #4 would be closer to Tempe than Columbus is.
Assuming that Ohio State wins the B1GCG, I think that their possible bowl opponents/locations are:
- Utah in the Peach Bowl if all the favorites win and Utah's win is at least comparable to OU's.
- Oklahoma in the Peach Bowl if OU wins and Utah either loses or looks weaker than OU in a close win.
- Baylor in the Peach Bowl if Oregon and Baylor win their CG's.
- LSU in the Fiesta Bowl if UGA beats LSU.
- Clemson in the Fiesta Bowl if LSU beats UGA and leapfrogs Ohio State.
If Ohio State loses I think they would probably make the playoffs anyway but who knows which spot or opponent they would end up with. My guess is that they would be #3 and play Clemson in Tempe.