You know, I wrestled for 12 years. We would drill certain simple moves repeatedly; such as taking shots across the mat. There were guys who looked very good taking those "imaginary" shots in practice or taking shots in practice when the opponent was just standing still. Put them on the mat and they panicked. Lost all sense of what they had been coached to do. Form went to ****. Shots looked terrible, if they even bothered to take them.If I had to play devil's advocate, I would say he could see that another QB within the scheme could have productive success standing in the pocket going thru his reads without scrambling out of the pocket prematurely.
But that is something coaches should be coaching him up for regardless.
My point is that some guys look like they have "IT" in practice, but, when in the intense environment of real competition/games, they aren't able to dig in and use the tools they have been coached to use. It's possible that Kenny (and Mitch), are those type of guys.
With some guys you saw this effect as they moved up in levels of competition. Guys who were fantastic biddy and Jr. High wrestlers just went to crap when they had to go against faster, stronger guys in High School.