I think they made their case last night for being in the playoffs. That's as close to a "W" as you can get, and it was on the road against the defending National Champs. Moreover, they showed they had the Offense and Defense to play with anybody in the country. They more than passed the eyeball test.
If Winston survives the Season and FSU remains undefeated, then it should be FSU, ND, SEC Champ and either PAC or Big 12 Champ, depending upon which is stronger team (both likely to have 2 losses).
If Winston goes down, it will be even easier, because FSU's slot will be open.