What's funny is that your argument is essentially, "Irrelevant hard data is still more valuable than relevant assumptions."
Nevertheless, here are some facts for you (sorry, I'm too lazy to provide links):
- TCU has fewer than 80,000 living alumni
- A large majority of TCU's alumni live in the same Television market
- TCU does not have many followers who are not alumni
- TCU averaged 38K people at home games in their best season ever
- BYU has over 360K living alumni
- Many of BYU's alumni live in a TV market that is not already in the Big 12 footprint and the rest live in other markets
- BYU is the flagship university for a religion with millions of U.S. members. Many of these members follow BYU football.
- BYU averages 64K+ at home games every season