Update
This week has really sorted things out. As mentioned above, its us and mizzou for #4. Looking at the schedules and tiebreakers, here's the breakdown:
KSU: @texas, iowa st.---despite our history with texas, I'm going conservative and say 1-1
mu: @nebraska, uk--I'd say at best 1-1. nebraska could be a trap game on the road, preparing for uk, and nebraska being a little angry at the iowa st loss.
Obviously, if we go 1-1 (or 2-0) and mizzou goes 0-2, we get the 4.
Now if we lose to texas and beat iowa st and mizzou beats nebraska and loses to uk. The tiebreakers go 1)head2head-split 2)division record-tied @6-4. 3)record against the top team in the division (uk)--Advantage KSU.
If we lose texas and win iowa st and mizzou loses to nebraska and beats uk, the same tiebreakers go until 3, when, if I'm reading it right, would go to common record against other division teams. uk/KSU/mu-tie. Then it would fall to colorado--Advantage mizzou.
The texas game is inconsequential if mizzou loses either game (I think they will lose either or both), because its a non-divisional game. Outside of NCAA resume's, the iowa st game is more important to us. Might be more to lose by losing to them than there is to gain beating texas.
Tiebreaker list:
http://www.big12sports.com/ViewArticle.dbml?DB_OEM_ID=10410&ATCLID=1520897