Being top caliber and being able to act autonomously from the NCAA are 2 different things. The "power" combined with "autonomy" only applies to 4 conferences now.
I gave my explanation on why they were grouped the way they were and I did not exclude from reporting on the others including one of the top BB conf in the Big East.
If it means that much to you create a post that says of the Top 5 BB conferences...
But there isn't a P5 in any sport anymore.