The thought that Nebraska may commit to the run game scares me.
I'd be concerned if Nebraska were to stick with inside/outside zone, power, counter, fullback trap, and jet sweep, especially they were out the same or similar sets. Because off those plays Tommy can run qb sweeps, reads and counters off the run action, probably for big yards. Then once the safeties are pulled up into the box, you have 1v1 match-ups on DPE, Westercamp, and a good set of complimentary receivers.
That's a lot to stop and I'd be worried about it.
If Nebraska wants to be balanced and throw it 30 times, I'm not worried. If I'm a DC, my bet is that Tommy can't beat me with vertical routes and timing throws, and I want Langsdorf to try to beat me that way.