Not sure why he doesn't get in... other than we not winning by a large enough margin to play the scrubs much. If the answer is... he doesn't grasp the offense enough to play, well, that's odd. We'd have to be the only CFB team in the country who had two backup QB's who can't figure out the offense.
This has been the veritable sliver in my mind. Nebraska seems to be this anomalous, black-hole style vortex where only Taylor Martinez can seem to learn this offense. Frankly I find the explanations that Taylor is the only QB who "gets it" completely unbelievable.