If Ohio State, Mich St, or Iowa win out they will be in the final four without question. If OU or OSU win out they will have to pray teams above them stumble. I even think Ohio State could lose one of their final two games and if they beat an undefeated Iowa in the B1G title game would still get in over any Big 12 team. The narrative for me here is the Big 12 teams are under more scrutiny by the committee than the Big 10 teams. If the committee can honestly tell you with a straight face that Iowa is better than OU or OSU we as a conference are in serious trouble.
