possibly though difficult to judge. fact is half as many people watch the womens final as the mens. do they only watch for Federer and Nadal, or because its the mens? viewing and ticket sales follows a similar pattern throughout the tournaments, and thats rather the point of the discussion...
they keep quiet on the details, as i recall the women's games attract significantly less interest with a fraction of viewing figures for the mens. the chap who raised the issue is probably factually correct, that if held alone the womens games wouldn't on their own justify equal prize money.