When you consider how many more sacks ND gives up, Book having that many more attempts (knowing that many of his attempts are hidden in sacks or tuck n runs because no one is open) my initial post says exactly what I was trying to say and it is accurate...we are 'trying' to throw the ball too much, which is nothing new for Kelly.
Its actually pretty easy to track his pattern if you go back and really think about it...when he doesn't have a QB he fully trusts, he leans on the run more heavily and those teams ('10 [with Rees after Crist got injured] '12 [Golson first year], '15 [with Kizer after Zaire got injured], '17 [Wimbush first year after Kizer left for the draft) typically perform better on the field. When he has a guy that he likes their raw talent, or he's has em a couple years and has confidence in them, he always has them throw too much and to this point it has almost always led to bad results on the field. Its just who he is, he likes to air it out and has said as much in the past...some people like that style and he is probably the perfect head coach for those people, but to my recollection there hasn't been a whole lot of teams in history that have won NCs with pass heavy offenses. Defense and a steady run game are the best indicators of a championship winning team and to this point those indicators have stood the test of time with only a few exceptions every now and then.