Bottom half is an understatement. The ACC has rarely

ever had two very good programs at the same time. Since FSU joined in 1992, they've only had five seasons with two top ten teams:
1998 (FSU 3, Ga. Tech 9)
2007 (Va. Tech 9, BC 10)
2013 (FSU 1, Clemson 8) - 2012 was close as they were both 10 and 11
2014 (FSU 5, Ga. Tech 8)
2016 (Clemson 1, FSU 8). This was one of the conference's best seasons ever with five ranked teams).

FSU sustained success. Clemson has now sustained success. From 2012-2016, both programs were great. But other than that, you can't depend on any other program to be good. And you have an average of 3 ranked teams per year. The 75th percentile and down is generally clearly below the SEC or the Big Ten and probably also the Big 12.