I see your point on the 7.5 M. Interesting that NYC had a hard time determining USTA revenue -- Maybe Cincinnatti or IW money was an issue -- if you have a link for that handy, sounds interesting. Anyway what kind of lease involves off-site revenue? Sounds like the landlord from hell!
The tennis magazine article may have had info that they don't want to attribute, so for now I think estimates of 8%-11%-14% will have to do. But the fairness of that is only one issue. Like Federer has been saying, the distribution of prize money, and making it possible for new players, is a huge issue.