The Big 10 east used to be murderers row for those teams. Setting them up so that not one of the top teams played all three of tOSU, Penn State and Oregon was genius for scheduling purposes. tOSU has to play Penn State and Oregon (and Indiana) so they have the toughest schedule.
Penn State/Indiana have the easiest schedules, only playing tOSU. Although Oregon's is pretty easy too, also only playing tOSU.