Even then, a good offensive line goes a long way. Nebraska's failures in the trenches the last 15 years has played as big a role as anything, if not the biggest role.
Offensive line play analysis is interesting, though. For all the direct impact they have on the game, they have an indirect perception due to a lack of commonly tracked stats. To really track offensive line stats you have to watch the tape and do it yourself, which is what sites like pro football focus tries to do. I can't speak to their accuracy, but they tend to have a better opinion of individual linemen on this team than we do as a collective whole. A big difference is they're grading individuals, we are looking at net results.
One simple play example is sacks. It used to be assumed that all sacks were the offensive lines fault, after all, if they blocked well enough nobody would get through. But as analytics have matured, people noticed the some QBs were putting up low sack numbers, even as their offensive line personnel changed. Over time, much more credit/blame has shifted to the QBs and play callers and less directly on the individual lineman themselves.
Running plays are a good example, too. If a play gets 7 yards, you tend to not notice it much. If it gets 70, it gets a lot of praise. From the offensive line perspective, they've pretty much played their part in both cases, but the latter the RB beat the Safety whereas he didn't in that first one. It's interesting when you track the median rushing yards of backs. They don't deviate very much, even though the average (mean) rush will, which strongly suggests big gains play a big role in assessing rushing efficacy.
When I watch UCF's line, I see a pretty decent unit, but not a unit that makes me think that offense will generate that kind of production. What I do see is a unit that gets paid off in yardage when they block well. That's the biggest difference I saw when comparing UCF and Nebraska.