This article was linked in another thread but I think it's interesting to look at as a kind of preview for the year. They used the average class ranking on the 247 Composite over the last five years to rank the teams. 247 also does one where they look at the talent actually on the roster which helps adjust for attrition and transfers so I think that's a little bit better look but this gives a decent idea when trying to compare "talent."
For our purposes, I'll list the Huskers and this year's opponents (5 year average)
2 - Ohio State (4.2)
19 - Oregon (19.4)
29 - Nebraska (28.4)
43 - Wisconsin (41.6)
44 - Maryland (42.0)
48 - Indiana (50.8)
50 - Northwestern (51.8)
52 - Iowa (52.6)
56 - Minnesota (58.6)
58 - Illinois (60.8)
64 - Purdue (65.0)
Not Listed - Fresno State, Wyoming
For our purposes, I'll list the Huskers and this year's opponents (5 year average)
2 - Ohio State (4.2)
19 - Oregon (19.4)
29 - Nebraska (28.4)
43 - Wisconsin (41.6)
44 - Maryland (42.0)
48 - Indiana (50.8)
50 - Northwestern (51.8)
52 - Iowa (52.6)
56 - Minnesota (58.6)
58 - Illinois (60.8)
64 - Purdue (65.0)
Not Listed - Fresno State, Wyoming