Let’s look at the FPI rankings of Utah’s and BYU’s schedules.

Both play one FCS game so we can ignore that. BYU plays 4 P5s with an average ranking of 20 (Tennessee 15, Washington 17, Utah 22, USC 25). Utah’s top 4 games average 23 (Washington 17, UCLA 20, USC 25, WSU 30).

Those 4 games are pretty equal but the next 7 is where BYU’s schedule doesn’t compare. Every game Utah plays is harder than the one BYU does. The average ranking of BYU’s opponents in these 7 games is 85, Utah’s is 61.

Boise State (42) - ASU (36)
USF (73) - BYU (44)
Toledo (77) - Arizona (51)
SDSU (77) - Cal (55)
USU (83) - Colorado (63)
Liberty (114) - OSU (84)
UMass (125) - NIU (97)