Women gamers more hardcore than men.

And yet they still earn only 75% of the Achievements of men... From ABC News:

Indeed, women now represent 40 percent of the gaming community in the United States, and new research that sheds light on the world of online gaming shows that female gamers -- or "girl gamers" as they are often called -- already may be bucking gender stereotypes.

In research presented Saturday at the annual meeting of the American Association for the Advancement of Science in Chicago, a group of researchers reports that female players are more hard-core -- playing more hours per week on average than their male counterparts -- and are happier when playing with their romantic partners while male gamers prefer to play on their own.