All I really have to know about Nebraska folks is they fired a coach 2 years after playing for a national title.........in a year he had a record of 9-3.......Yes, but how much is always the debate. I think many folks have just subscribed to the 3 in 4 years, wouldn't take the tie in 83, and the 95 Nebraska team was the greatest team in my lifetime, and just gave him a spot in the top 10. When I lived in Nebraska, there were a lot of young and middle aged Husker fans saying he was the greatest of all time because he did what Bear, Switzer, and Wilkenson couldn't do and wine 3 out of 4. But I met a lot of older Husker fans say he was the biggest underachiever of all time because of the ones he didn't win. So I think somewhere in the middle is where Osbourne fits.
But coaches I know are higher than Osborne (no particular order):
Saban
Bear
Wilkinson
Meyer
Switzer
Mckay
Bowden
Coaches that probably are higher:
Knute
Hayes
Coaches that could be considered higher:
Holtz
Spurrier
(Auburn might have fired a coach 2 years after a title, but they'd looked horrible, and he was 3-9).
Firing Frank Solich MIGHT be the worst thing that program ever did as far as what set everything else into motion. If they had been willing to tolerate him a bit as he transitioned, they could still be one of those teams that contends every 3-4 years and that wins 9 or 10 games per season. He'd have been Pelini without the drama, and because he knew the state, he wouldn't have had the disadvantages of his successors pre-Frost.