This coming game at Rutgers is probably the only game Nebraska will be the favorite in for the rest of the season (unless the bookies hate Illinois for some reason). Even with Iowa and Wisconsin looking like they're having a down year (Wiscy is the only team not sharing the lead in the Big 10 West at 0-2 in conference play) both of those teams seem like they have the Huskers' number and I don't see them losing this year either barring a complete meltdown.
Its more just funny to be able to share that lead after 5 games, although that's more because the rest of the division is already cannibalizing each other than anything else.