I disagree that it doesn't matter how long a sport has been around. If it hasn't been an avenue of opportunity, your selection size of athletes will be much smaller, therefore weaker, by aggregate. Tennis is a well-renumerated and well-established sport for women, and so gets better players. The WTA doesn't always get equal pay. But when they play together, you can't say which players bring the people to the seats, or eyeballs to the TV. This argument always forgets the history of women's tennis. Men's tennis is in what is frequently called a "Golden Age." There have been times when it has been less-compelling, by the very contrast. And there have been times when women's rivalries in tennis have been more compelling. Also, regardless of eras, tennis produces marquee players that draw crowds, and some of these are women. Serena Williams is the equivalent of basically all the men not in the Big 4 combined, to a tournament. Sharapova has been similar. And Venus. They sell tickets, and they get people to tune in. That's what matters.