Disclaimer: In no way am I saying that going 6-7 is acceptable. It's not. If you want to argue about that or the coaches, do it somewhere else.
2015 was the 2nd time since 2000 that we didn't lose a game by 20 or more points (2010 was the other)
2015 was the 1st time since 1999 that we didn't lose a game by more than 10 points
2015 was the 1st time we have gone 3-1 in our last 4 games since 2009 (we last went 4-0 in 2008)
We are currently 8th in rush defense, allowing 108/game. We were last that high in 2009 (finished 8th, allowing 92/game)
We averaged 0.8 fumbles/game, which is currently 6th. That is lowest that I can find since 2003 (can't find stats before then). Our previous best from 2003 to 2014 was 1.5 fumbles/game in 2009.
Carry the ball rarely, and you'll find you don't fumble it much.
As to all the "margin of loss" arguments, in how many of those close losses should NU have been a big winner? Per Vegas, here were the spreads going into the losses:
Opponent -- Spread at game time
- BYU - NU (-7.5)
- Miami - Miami (-3)
- Illinois - NU (-7)
- Wisconsin - NU (-1.5)
- Northwestern - NU (-7.5)
- Purdue - NU (-7.5)
- Iowa - Iowa (-1.5)
So, Nebraska lost 5 games this season where they were the favorite, including 4 where they were the favorite by more than a touchdown, which is a wide spread by FBS P5 standards. For example, a much more highly ranked and successful MSU team was only a 4.5 point favorite against the Huskers this year.
People bemoan the blowouts of past seasons, and I get that, but at least those losses were often against teams that were favored to be Nebraska (e.g., Wisconsin last year was -4). I wish there was an easy way to compare NU's records against spreads across each year.