Busting a myth. Here is just the SOS of conference games played.
https://www.teamrankings.com/college-football/ranking/in-conference-sos-by-other
Wisconsin #4
Iowa #11
Northwestern #18
Nebraska #19
Finally the first Big12 team clocks in at #20 and that is OU
Baylor #24
Texas #25
Minnesota #27
ISU #28
So as you can see the Big10 West was clearly tougher last year with 4 schools having a conference SOS tougher than the toughest big12 schedule. Also pretty ironic that Twins calls Minnesota's schedule easy, yet it's conference slate was tougher than ISU's.
Looking back was interesting as well. 3 out of the last 5 years Iowa had the tougher conference SOS. This whole myth about the Big10 West is just that a myth. Iowa has a tougher conference SOS the majority of the time over the last 5 years.
Team rankings? Lol!