I'm not surprised at some ACC decline, only at how fast it happened. Seriously, the Mountain West is slightly higher statistically than the ACC right now.
The ACC is 1-5 vs the Big 12, 2-3 vs the Big 10, 1-3 vs the SEC, 0-2 vs the AAC, and 2-2 vs the PAC. Somehow 3-2 vs the Big East. Thanks to the Bryant game, the ACC is now 0-2 vs America East, a conference many people could not name.