For an idea of how bad the B1G is this year, and how a 12 or even 13 win B1G team could get left out here is why:
Team A (7th in B12, Currently 10 seed by Lunardi)
Record: 16-8
RPI: 32
KenPom: 25
Record vs. Quadrant 1: 4-7
Record vs. Quadrant 1/2 Combined: 6-8
True Road Record: 2-5
Overall SOS: 17
Non-Conference SOS: 62
Best 3 Wins (using RPI): vs #15, #24, vs #47 (total = 86)
Quadrant 1/2 Games Remaining: 2 Q1, 4 Q2
Team B (4th in B1G, currently out First Four Out by Lunardi)
Record: 18-8
RPI: 55
KenPom: 57
Record vs. Quadrant 1: 0-6
Record vs. Quadrant 1/2 Combined: 3-8
True Road Record: 4-6
Overall SOS: 91
Non-Conference SOS: 259
Best 3 Wins (using RPI): #40, @ #83, #86 (total = 209)
Quadrant 1/2 Games Remaining: 0 Q1, 1 Q2
Team C (7th in Big East, Currently First Four Out by Lunardi)
Record: 14-10
RPI: 56
KenPom: 49
Record vs. Quadrant 1: 3-8
Record vs. Quadrant 1/2 Combined: 5-10
True Road Record: 3-3
Overall SOS: 12
Non-Conference SOS: 140
Best 3 Wins (using RPI): #27, @ #27, #29 (total = 83)
Quadrant 1/2 Games Remaining: 3 Q1, 1 Q2
Team D (9th in SEC, currently 10 seed by Lunardi)
Record: 16-8
RPI: 36
KenPom: 47
Record vs. Quadrant 1: 4-6
Record vs. Quadrant 1/2 Combined: 5-7
True Road Record: 1-6
Overall SOS: 34
Non-Conference SOS: 80
Best 3 Wins (using RPI): #10, vs #18, #30 (total = 58)
Quadrant 1/2 Games Remaining: 5 Q1, 1 Q2
Team E (5th in ACC, currently Last Four In by Lunardi)
Record: 17-7
RPI: 60
KenPom: 60
Record vs. Quadrant 1: 4-5
Record vs. Quadrant 1/2 Combined: 4-6
True Road Record: 2-4
Overall SOS: 68
Non-Conference SOS: 283
Best 3 Wins (using RPI): #4, #7, @ #11 (total = 22)
Quadrant 1/2 Games Remaining: 2 Q1, 3 Q2
My point here is that Team B (Nebraska) is basically drawing dead compared to these other teams. The Huskers profile can only get worse at this point. Every other team has a number of quality games ahead which means even losing some of those games will help their computer numbers, or at least won't hurt them. (And most of them already have a sizable advantage on Nebraska in the computer numbers.) Nebraska desperately needs to pick up a win over Ohio St/Purdue/Michigan St in the Big Ten Tourney to have a good shot.