I think people are really tossing around comparisons much too quickly here, I mean your acting as if JT has dumbed the offense down completely to make sure Pryor doesn't make mistakes.
I'm not seeing that, I'm seeing a maturing QB who is simply taking what the defense gives him, I mean against Iowa they basically stayed in straight cover 4 all game long, the old TP would've forced a deep ball much like he did against Purdue, meanwhile against Iowa all he did was hit Ballard, Posey, and others underneath and kept the chains moving. Against Michigan you didn't see him forcing the ball into coverage (His one pick went right off his receiver's hands), you saw him settling down and taking what the defense was giving him, and attacking the cover 3 with the deep ball attempt to Posey when Posey split the safety and the corner.
Tressel is still calling the same game he was before IMO, your just seeing Pryor become a much better decision maker and continuing to mature and develop in the passing game by not forcing the ball and taking what the defense gives him.