The lack of parity of pay between sexes never characterized tennis like this. Every player, ATP and WTA, has been saying what he or she has been thinking, without worrying about receiving criticism. Like every corporate organisation, tennis also sees its earnings before paying its workers, i.e.
the players. But this money, where does it come from? Based on the assumption that the top players in the ATP surely earn more than their WTA colleagues, here are some graphics that show the current situation. The only tournaments which have the same prize money for men and women are the four Grand Slams, the first one to equalise pay for both genders was the US Open in 1793 while the last one was Wimbledon in 2007.
The differences in pay in other tournaments can be as follows: Prize money is always more in the men's Tour: To give a practical example, we can take the respective leaders on the Tour: Novak Djokovic and Serena Williams, who each won three Slams in 2015.
Plus, the Serb won 93.14% of the matches he played while the American won 94.64%. But Nole gained a total prize money of $21 milion, while Serena took a lesser $10.58 milion. Earnings of the top 10 players in 2015, men (green), women (red): Though many people are convinced that men's tennis is more attractive than the women's, Serena Williams gave an interesting answer on this point, stressing about the fact that last year the women's final at the US Open sold out well before the men, and that in 2014, the WTA Final had audience thrice more than the final between Cilic and Nishikori.
Fans are not attracted by what round is played, if quarter-final or final, the importance of the players matter. As you can see in the list of Google search tendencies, in the last 10 years, Serena Williams was researched almost like Nadal and Federer, and more than Djokovic.
It's true that in sports in general there are more fans for male sports players than there are for women and this concept has been confirmed in tennis too. Analyzing TV Rights and audience reveals that the ATP sold TV rights for $1, 200,000 and got 935 milion spectators, while WTA sold for $500 milion and had 395 milion people who watched from home.