If we compare “announced” attendance for both. It’s over 40k for UA and just under 30k for SDSU.
In 2022, UA was viewed by 506k people, SDSU by 196k, don’t know how they calculate that in this article
Also, UA is a much bigger basketball brand than SDSU.
Overall, UA is probably even more valuable to the Big 12 than it is the PAC, it fits the culture much better