The thing about going undefeated is that the team's potential is unknown. If a team goes undefeated in 13 games, you have no real basis of knowing how long that team could go without a loss, whereas when a team has a loss, you do have that predictive basis.
With a 12-1 team, you can say, "that's a 92% win percentage so over a hundred games, they'd probably lose 8." But with a team that is 13-0, you're still at 100% after 100 games.
That's why you respect the undefeated record -- deference to potential.
Even if FSU gets shellacked in its bowl game, the committee has made a mistake.