I hate qb controversies. Find the guy with the best arm strength and accuracy, then 3rd importance, mobility. Put that guy in as starter and give him the most reps to learn the offense, learn to read defenses, and learn to trust his protection and go through reads. Stick with him until he proves he can't grasp thr mental side, and at that point put the less talented QB ( arm strength, accuracy, and then mobility ) in, give him all the reps, and let him prove if he can grasp the mental side.
This business two guys sharing reps, to me, is a sign of coaches that don't know what they are doing on offense. Jmo. Neither is gonna be ready to help us win game 1 due to sharing reps. Drives me insane.