Why would you expect a sweep? The Citadel has already beaten a couple of teams this season that are better than Nebraska, Louisville and Virginia Tech.
This isn't football. There are a lot of small schools with very good baseball programs.
The last time Nebraska was at The Citadel, about six or seven years ago, NU was ranked #3 and lost. Since then we've also beaten a couple of #1 teams, including eventual national champion South Carolina. In fact, we swept the c$%ks during one of their national championship seasons.
Last year, I was reading these same types of comments on the Kansas State and Pitt boards after we hammered them. Never underestimate your opponent.