Can see this scenario as well. In the end I look at it like this.
Given - we have to take care of business against Northwestern, Illinois, and Indiana. No sure things but all very winnable games. If we do that:
If Iowa beats Wisconsin - We have to beat Iowa and then the result of the Wisconsin game at the end of the year wouldn't factor in to the West race.
If Wisconsin beats Iowa - We have to beat both Iowa and Wisconsin.
This of course assumes Minnesota, Iowa and Wisconsin don't drop other games along the way. Both Iowa and Wis have to play Nebraska and I think the Huskers could give them a battle (especially Iowa). If we work off the idea that Minnesota, Iowa and Wisconsin are all going to win their other games. Then in the head to head round robin Iowa winning over Wisconsin is the easiest path for us because we only have to win one of the two rivalry games to win the division as opposed to both.
Good chance we are all going to become big Nebraska fans for the final 2 weeks of the year as they have the potential to be a big factor in the West race in those final 2 matchups.