Not entirely sure you read it either.
There's a chart on the side that does break it down for the amount per school. The Big 12 came out on top at $26.2 million
And yes, it does not appear to include any non-conference generated Tier 3 rights (It specifically states the Big 12 is not included, and the SEC is probably handled the same. The other 3 conferences pool their rights)
Although I will note that outside of Texas, the Tier 3 stuff for the Big 12 shouldn't move the needle much. The Kansas number appears to include many non-tv Tier 3 rights, which all the other schools have and are also not included in the figures.
It also highlights one one the reasons the Big 12 is not likely to be that big of a threat to the ACC. The difference in payout is not that much. And with the Big 12 locked into long-term deals with no real chance of starting a network (thanks to Texas), there's no much reason to believe these figures will drastically change outside of figures that all the conferences are getting (new playoff money, etc...)