Realistically, I don't know. I would definitely look at any numbers with open eyes but I think name brand-wise for academics and athletics, alumni, donor support, etc there's a lot to be said for comparing them as groups of two.
Overall, with UVA butting up against DC metro and UNC's growth they are bigger names and markets than Clemson and FSU. FSU is a clear #2 in the state of Florida compared to the Gators. I am pretty certain Clemson clubs the Gamecocks for national recognition.
All four states are still massive growth states but it's eyeballs and matchups. And it's not just what the fans of those four schools want, it's what the existing schools' alumni and fans want. We all saw that with UConn in AAC. Plenty of football games and some basketball games against highly ranked opponents but UConn fans still weren't interested.
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