When Utah has had their best QBs the games haven't been close. Smith, Johnson, Wynn, and Huntley have all won comfortably, if Utah is able to find another in Brewer, Rising, Costelli, JQJ, and Johnson the streak will continue.
Utah had issues with TEs because we've hadn't had any, now we have two of the best in the state and loaded with more. Add a QB to the group and BYU will have to do more than just stop the run.
Utah sees big play potential in every conference game, adding Puka isn't going to chance much. If you figure out how to stop turning the ball over, then you might have a chance.