Cal, for example, has had three Sunday home games that have averaged 1,000+ fans less then their four Saturday games so far... despite their Sunday games being against better teams. However, Larry Scott and his AD's have decided that the increased price of TV potential is worth more than a couple thousand extra tickets sold.
Utah is no different, although the deficit was even more pronounced. I believe this Sunday's game was a 'test', so to speak, for the Utes. Most of us would say the 'test' utterly failed, but given the weather situation, the Utes will probably see another Sunday home game next year.