Well. This is why you look at more than the numbers.
The Nebraska defense by design, is similar to how Oregon was designed. And that isn't to necessarily always stop the opposing team, but create turnovers for an offense that is supposed to score every time it touches the ball. This style of defense is supposed to work with a no huddle offense as they recognize it is impossible to maintain a top 30 defense year in and out when the other team is always winning the TOP. The other team will gauge your defense for big yards and scores but you should win by multiple touchdowns if your offense is good.
Obviously we aren't were we need to be yet to make this system work, but firing chins in a knee jerk reaction aint gunna fix it either.