Understand that this is a 10 team conference vs a 14 team conference, so the Big XII getting in 7/10 is a deeper showing that the SEC getting 6/14.
https://www.cbssports.com/college-basketball/bracketology/
The average seed for the Big XII is 6.71. For the SEC: 4.33.
If this bracketology were to hold (understand that it won't), the SEC would have 3 teams seeded higher than any Big XII team. 4/7 Big XII teams are 8-10 seeds (gotta think TCU is a bubble team, but #9s Baylor and OU are safe).
Outside of TT, don't see a FF possibility from the Big XII. See 3 from the SEC depending on how LSU handles their coaching/freshmen crisis....