I honestly think that the committee would put in Cincy before the USC team that has looked undisciplined and incomplete. They won’t do this, they’ll happily put in Clemson + ND with 1 loss each. Conversely if ND beats Clempsin twice, the committee will put in 2 SEC teams: SEC Champ + 1 loss A&M or Bama.
Edit: The committee has already counted out the P12 by putting Oregon and USC outside the top15. They don’t respect the PAC this year (as if they did any year), and they’ve already made up their minds about that.