JP wasn't drafted to be a game manager.
He has the tools to be a playmaker, and win games with his arm.
The only thing he is lacking is experience, as he gets more he will start to take games over.
I hope you mean JP won't win games with his arm "now", because he has shown the ability to make huge plays at times, and as he plays more that'll become more regular.
Funny thing has happened, before the season started most people bitched JP couldn't manage a game, and was a one trick pony, now people think he is Trent Dilfer.
As someone smarter than I put it earlier this week, we are a bipolar bunch.