Utah has been in a far superior league and position for a decade. Upgrading facilities and stadium, paying coaches and staff. However, they were also going into severe debt to make all this happen. When faced with a much smaller payout and lower donations from their disappointed base, the Utes will have to implement some austerity in their budgeting. Staffs and resources will shrink.
BYU on the other hand will be going in the opposite direction. We don't need.a lot of cash infusion to go a long way to upgrade our facilities and resources. If we want to upgrade the stadium that will likely come mostly from donors and donors have been pent up and ready to give big.
Yes, it's optimal for BYU is to have Utah in the Pac/MWC, but even in the B12 there will be a major shift.