Which is more popular - Men's Tennis or Women's Tennis?

Google Trends is showing that based on Internet traffic, the ATP tour website is more popular than the WTA tour website. In the past 12 months, Google Trends data shows that the number of unique visitors to the www.atpworldtour.com website, the official website of the ATP Tour, is more than twice as much as the number of unique visitors to www.wtatour.com - the official website of the WTA tour. See graph below. Of course, one may argue that website visitors may not necessarily translate to actual popularity between the two tennis tours, but its nevertheless a good indicator. What's surprising is the discrepancy. A 25% to even 50% difference between website visitors sounds more plausible, but twice as much? Then again, the WTA Tour website has considerably less content and is definitely less interactive than the ATP Tour website.

TOP 10 Countries visiting the ATP Tour website:
1. United States
2. United Kingdom
3. Spain
4. China
5. Italy
6. Japan
7. Canada
8. Argentina
9. France
10. India

TOP 10 Countries visiting the WTA Tour website:
1. Japan
2. United States
3. Denmark
4. Italy
5. United Kingdom
6. Russia
7. Serbia
8. Germany
9. Poland
10. Israel

Five observations on the countries visiting the WTA and ATP websites:

- China is more interested in men's tennis than women's tennis but not a single Chinese man is in the top 100.

- Would Denmark rank as high as #3 without Caroline Wozniacki? How about Japan? Is the interest all because of Kimiko Date-Krumm?

- I was expecting Russia to have more Internet visitors to the WTA website.

- Germany is not ranked in the top 10 for the ATP tour despite German players occupying 10 slots in the top 100 of men's tennis.

- Is Andy Murray generating more interest in tennis in the UK than Rafael Nadal is doing in Spain?