They don't hit the open shot at a high enough percentage and because their D isn't that great, an athletic team could beat at the buzzer. They are inconsistent at best with the open shot and with Brey's system, they see a lot of open shots. Then again, they might be able to beat anyone in the league if they have a good shooting night even if the other team plays their usual game.
I'm happy for them and their record but I don't hold much hope for them in the ACC or the NCAA's as they're just not athletic enough in all positions.