Inconsistency.
Not just inconsistency from game to game, but inconsistency within games.
Consider last night's game vs Boise St:
1st quarter--not bad. 7-7 with each team having a nice drive.
2nd quarter--terrible. Almost 0 yards rushing?
3rd quarter--awesome. When was the last time BYU scored 21 points in 1 quarter?
4th quarter--terrible again, did their best to try and give the game away.