I don't think we're Nebraska. I mean, they've just run into the geographic, financial and cultural limitations of Nebraska as a state at a time in college football's evolution when those things matter a lot. They can still have some decent 8 and 9-win seasons if they get their act together, but they're no longer a serious candidate for a national title based on things out of their control.
Dallas, on the other hand, is the 9th largest city in the US, the franchise is the most valuable in all of sports, with a television cache that admittedly defies rational explanation after all these years, has resources and some sharp-looking uniforms, and has actually assembled a decently stocked roster. There's no reason the Cowboys shouldn't be at least in play for a Super Bowl every now and then save the egomaniacal cancer running the show.
In short, Nebraska is now facing the real-life consequences of being Nebraska. The Dallas Cowboys management is just fucking the team up and has been for almost three decades.