I do tend to believe Nebraska' position in the CFB landscape, as well as the climate and weather patterns, lend itself more towards having a high powered rushing attack. Columbus, OH, isn't a hugely different from Lincoln, NE, in regards to weather (probably a bit windier in Lincoln), but tOSU also does tend to have better athletes who I think are in a better position to make a passing attack more consistently successful.
It reminds me of Green Bay of all places and their ability to have Hall of Fame quarterbacks. Green Bay's weather sucks in the fall/winter, but it's also the NFL where you get the best of the best talent, so they're able to make some of those things work consistently. I've never been particularly convinced that Nebraska can compete at a high level in a passing attack because of all of those factors, which was something that made me nervous about Frost's hiring and if he decided he wanted to be heavily pass oriented. That's not to say Nebraska could NEVER do it, I just don't think they're in a strong position for it.