Their defense is full of NFL guys, they have a record-holding, NFL-quality running back who has helped the offense to take care of business and score a ton of points. Whether this year's Utah team beats Oregon tonight or loses to LSU or Ohio State will not affect future rankings.
However, I don't see Utah having a similar team anytime soon. The Utah coaches convinced 2 or 3 key players to postpone the NFL draft for a year in order to get this special season. That doesn't happen often for a team like Utah.