I think alot of people think that MM will make any QB better. That may/may not be the case. I was disappointed in how Tolzein played, I thought he would continue to improve, that didn't happen. I thought he played pretty good, all things considered, against the NYG. Who would have thought he would have looked so bad at home against the Queens.
In a lot of cases, the more a marginally talented quarterback plays, the worse he does. Teams can study video and exploit weaknesses.