Okay, I've got the best teams of each season back to '71 sorted out by run and pass D. I'll take the strongest run defenses and see how their offenses were, preferably run-based, to find some worth adversaries for '95 Nebraska.
2016 Alabama - Hurts-led Tide team had an epic run defense. Hurts wasn't a great passer, but the offense ran it a ton - all 3 main RBs averaging 6.5 ypc or better (Harris, Scarborough, Jacobs). They had very balanced receiving threats, with 2 WRs getting equal yards and a real threat at TE. This team lost to Clemson and Watson in the NCG on that rub play.
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2006 Michigan - an even better run D than '16 Bama's, but the offense concerns me. Henne wasn't really a go-out-and-win-it type of QB, although he did have 3 legit threats catching the ball (Arrington, Breaston, Manningham). I guess I just don't see Mike Hart gutting out those tough yards vs '95 Nebraska.
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2003 USC - an offense A LOT like Florida's, so it might not be the best choice. Way better defense, though, especially vs the run. Leinart throwing to two 1,000 yard WRs (Williams, Colbert) and a RB-by-committee. This was before Bush getting a lot of carries. But again, as long as they didn't have a stubborn, simple blocking scheme to take advantage of, they'd be a worthy opponent for the Huskers.
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2002 Kansas St - fits the statistical cutoffs, but probably lacked the overall team talent to realistically pull it off. But you never know, a legit overall defense + Darren Sproles....stranger things may have happened.
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1996/1997 FSU - both of these squads were one win vs Florida away from a NC. Neither gave up any rushing yards (~53 per game), but were limited by QB play. The '96 version had a worse Busby at QB, but Warrick Dunn might've been able to give '95 Nebraska fits. The '97 version didn't have Dunn, but a better Busby, and Peter Warrick, not Tommie Frazier, might've been the best player on the field. Overall talent-wise, these FSU teams were stacked everywhere. They might have passed the ball too much for their own good, though.
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1991 Washington - just an all-around great team that also stuffed the run. Could pass and run on offense. Had studs at all 3 levels on the defense. Wouldn't have been intimidated or out-manned.
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1989 Miami - super run-stuffing defense, but vs the pass as well. Strength of the team was the DL, which would cause problems for Nebraska. This team is A LOT like '97 FSU in that it's full of talent everywhere, but the QB play was very average. RB by committee, plenty of great pass targets, but too many INTs thrown. I'd give this team the best chance at stacking up the Frazier/Phillips/Green run game, though. I could see these Canes kicking a lot of field goals and having a close, ugly game go to the wire.
That's all I got, from a statistical POV. Personally, I wish I could see the '95 Huskers play the '93 Arizona Wildcats' desert storm defense. UNL would win because U of A wouldn't cross the 50 on offense, but that quirky defense that shut the earth down running the ball would have been like football porn.