Frequent blitzing. Heavy pressure on a qb forces him to have to get the ball out quickly before anyone is open and it disrupts timing patterns which results in lower completion rates and more turnovers.

The way to beat that is to run the ball effectively. Especially with a running qb. CBs won't even know it's a run until too late because their back is to the ball.

If a team can't run against Utah, they are toast, because they will just put more pressure on the QB and get sacks and turnovers.

When the run game is successful, they have to play more honest instead of bringing pressure so frequently.