If the basis is which game was a better display by Nebraska, then it's Ohio State, no question. Also was a better Nebraska team that year. But as for which win was more fantastic, will live on in memory, and made greater contribution to respective 9-4 (but very differently 9-4) seasons, then Northwestern takes the cake.
And yeah, Lavonte's strip stopped Ohio State from running away with that game (which they had started to do, having only expanded the lead to 3 scores on the previous drive). But there was plenty of time for Ohio State to fight back and hang on. When Braxton went out, it was 27-13. Ultimately, Nebraska went 3-0 in touchdowns to win by 1 score during a lengthy stretch marked both by very impressive work from the Husker offense, and an extended collapse for the ages by an inept backup QB.
It doesn't make the win less legitimate. Injuries happen in college football, depth matters, and I'm sure Buckeyes fans can't believe they didn't put Kenny Guiton in. It just makes it a little less legendary of a game to me. But yes, it's not even close as to which game had the more impressive football. Although, if that's the criteria, the games to put it up against would be different. Maybe Oklahoma State 2010, Missouri 2010, Texas 2009, Arizona 2009, Wisconsin 2012 Part 1 (also a three score deficit where we rallied to score the final 20 points of the game, while holding Wisconsin to 84 yards on their final 5 drives, at 3.8 yards per play),...possibly others.