That's somewhat of a good point. But what constitutes duke's "great teams". How is that being measured? By end of the season results? That doesn't add up. Because in years where duke didn't make the FF, maybe they didn't make the FF because they didn't have as good of a seed in part because they lost to Carolina during the year. See what I mean? So if duke doesn't make the FF and they lose to Carolina during the season, they're not one of duke's great teams?.
In my opinion, if Duke doesn't go to a Final Four and beat UNC, no they are definitely NOT a "great" team. Duke's bar is that high. They can be considered a good team without those achievements, but certainly not great.