Here's the deal, IMO...
The passing game has been lacking all season due in part to one major reason - the QB run, whether designed as a QB run or as a zone-read, was taken almost entirely out of the offense, and replaced with Braxton in the Wildcat. The opposing defenses could feast on the fact that Cardale and J.T. were not threats to do anything but hand the ball off, or throw. Suddenly, the "numbers" game that Urban Meyer's entire offensive philosophy is based upon became stagnant. The defense had a situation where they always had the numbers advantage. To go along with that, OSU became extremely predictable in who was getting the ball and how they were getting it, based on the offensive alignment and pre-snap motion. Teams stacked the box and protected their edge, while still having safety help in the backfield. The best (and easiest) way to unlock that type of defense is running a read-based offense where the QB is a threat and the offense once again has a numbers advantage.
The past two weeks, with J.T. now finally becoming a threat in the run game, defenses once again are forced to pick their poison with the OSU offense. They, again, must decide what they want to take away, but then hope OSU does not take advantage of their decision. J.T. looked lost in the passing game earlier this season, even against lesser opponents, because the offense was drastically different from what he'd run last year. As long as the OSU offense continues to allow J.T. the opportunity to be a threat running the ball, I think the passing game will take off once again as it did last season with J.T. at the helm.
Then, the OSU offense will truly show how frightening they can be for opposing defenses.