The ACC has to be hoping Duke wins their last 2. The ACC Championship is likely going to be a blowout regardless who plays, but having Duke make it would be a much better story than VT, GT, or even a Miami rematch.
It's a rivalry game and - despite their record - Duke has shown they can still just as easily play down to their opponent's level, due to the current amount of talent on their roster, as they can up to better competition
(I somewhat feel the NC State game to have been a great indicator of that, before the back to back pick 6 interceptions in the almost end of the 4th quarter)
Also the history of the Victory Bell still seems to suggest the rivalry as having a history of being very one-sided...since the 1990 Duke has only won it on the field twice. (Though since 2005 they have also all been 1 touchdown or less scoring difference victories.)