Wisconsin may have righted the ship with the firing of Chryst. I know they only beat a bad Northwestern team last week, but they are still a much more talented and deeper team than NU. Also, yes, Iowa's offense is putrid, but their defense is still pretty salty, and the game is in Iowa City. Those 2 games aren't going to be easy, especially as they are at the end of a 4-week stretch against the most physical teams on the schedule.
I think Purdue wins this week pretty easily. Illinois is a toss-up game, and I worry that Minnesota will pound NU into submission in that game. especially if Ibraham is available.