Let's say ISU beats Texas and loses to KSU. How does a OU, OSU, UT and KSU tiebreak work?
Head to head doesn't work, so next step is record against Iowa State. OU and KSU are now tied. No head to head. They both played OSU and Texas. KSU lost to both so OU as the #1 seed.
2 seed comes down to KSU, UT and OSU. The next best common opponent is ISU, so KSU gets the #2.
If Texas wins out and KSU wins out, a three way tie between OU, OSU and KSU would go to a common opponent of ISU. OU and KSU would prevail. No head to head, so OU beating. UT and UT beating KSU means #2 is OU.