the numbers you are putting here aren't concrete in showing that there is an actual disparity. I don't know the exact numbers and neither do you. If you believe that you can read into a final number without knowing how the inputs are decided then you are not going to understand the final information.
Point is that neither I don't know how to read the numbers because I don't know how they are deciding the inputs. Unless you have more information then you also don't know.
TCU may very well generate more money from football then BYU does but I'd be interested to know where it's coming from and if they are using the same measures for their revenue. It makes a big difference when putting a monetary value on the team.