Teams we're competing with and their chances of beating us out for a playoff spot if we win out:
Big XII champion- 97%: This would be the hardest spot to take away as our best-case scenario is that we're competing with 2-loss Kansas State, and they would stand a very good chance of beating us out even if they're the representative.
Alabama- 93%: Easiest way for Alabama to miss out is Auburn win over Bama, Arkansas win over Ole Miss, and Ole Miss win over Mississippi State letting Alabama win the division with 2 losses before losing again in the SEC championship. With only 2 losses for Bama, it would be tough, but could still happen if we beat Georgia convincingly and then Georgia beats Bama convincingly the following week.
Pac XII champion- 90%: First thing we need is an Arizona State loss. Then either a USC win over UCLA or a Stanford win over UCLA and a Utah win over Arizona. This gets a 3-loss team in the conference championship game. Then after all that, they still need to beat Oregon
Mississippi/Miss State- 67%: Mississippi State has to lose for us to get in. Then, we either need Ole Miss to lose to Arkansas this week or for Georgia to win the SEC so that our H2H win gives us enough credibility to beat out a 2-loss Ole Miss.
Ohio State- 60%: Pretty simple here. If the Buckeyes win out, we're screwed. If they lose either to Michigan or in the Big Ten championship, we're good.
Florida State- 50%: Very difficult to figure how the committee would weight the extra loss vs. the H2H and conference championship if Tech's 11-2 and FSU's 12-1. My guess is that we'd need to win by at least 10 points, maybe more to make it decisive enough to take the spot. Alternately, FSU could lose to BC or Florida.
2nd Big XII team- 45%: If TCU and Baylor both finish with one loss, I think the co-champs would have to get in over Tech. Either need Texas to beat TCU or Kansas State to beat Baylor to avoid this.
Missouri/Wisconsin/Georgia/the field- 7%: Would be very surprised if any of these teams got in over an 11-2 Tech squad, but you never know.
So, it looks like the chances are a little worse than I thought initially. Still not impossible, but probably only 15% or so even if we win out.