Tuttle looks to have a reasonably strong arm. He is another Ute QB recruit that slings it side arm! He is listed as 6′ 4″ but he delivers the ball about as high as Shelley, who is much shorter.
Shelley has an average arm that will probably be exposed at the D1 level. He is a great athlete, and a talented runner! He may end up with special plays from the QB position that are 90% run. I’m sure that the defensive coaches are already salivating over moving him to a DB position.
Hard to tell how accurate either passer is, both will have to be extremely good in the accuracy department to take the starting QB position at Utah.
Just my impressions.