Unless Enos is going to use Martell as a rushing threat, it will and should be won by a guy like Jarren and Tate should have never come here.
For Martell's inadequacies in his passing ability, he makes up for it by being a hard-nosed running threat. If you aren't using that ability to help slow down, soften up, and confuse the defense, you are doing him a disservice. His feet open up the pass and make his life easier. When you factor in his skill as a runner, you get a more complete weapon at the Qb position.
If you take that away or don't fully devote your offense to it, you're left forcing a QB to strictly throw when that isn't his game. I hope Enos has a plan in place to run an Urban style offense for Martell. Maybe even use him the way UCF used Milton with something like 12-14 rushes a game. Martell's dynamic ability is a QB is removed when you sever one of his biggest skills.
Martell is a gamer and has the attitude of recent great QB's stemming back to Tebow -- I have faith in Tate. It's Enos I am worried about.