I watch the Big Show on BTN every morning. They play the show from the night before at 6 AM MT. Anyway the "experts" on that day were asked if they bought into the hype around Nebraska.
Pat Forde- NO
Dave Wannstedt - NO
J. Leiman- NO
All cited the defense or lack there of as their reason.
Dave Revsine, the host of the show who has seen Nebraska practice, said their defensive line looked good and deep at the end of the segment. He commented that the grad transfer Darrion Daniels looked like the real deal.
As has been mentioned before, I think Griffith and DiNardo were very much more impressed with what they saw than they thought they would be. In their rap up they liked Nebraska's offense a lot in a round about way. Then they said the key was to have a "good enough" run defense. It didn't have to be the best, just good enough.