Women seem to have more dedication and resolve in general and have a better work ethic. They are generally more positive, caring, and have a can do attitude that many men don't seem to have. Attitude is really what it comes down to. Women tend to have the upper hand in most areas of contemporary society despite being oppressed.
For years, women have been suppressed by their male counterparts in seemingly ever facet of society- the workplace, at home, etc. Now that women are finally being allowed to play a larger role, they feel that they need to make up for the countless years of oppression that past generations have experienced, so they work harder and outperform men.
Women are now showing that they should have been given equal rights as men before. They are not outperorming men but it is apparent that they have the same abilities as men. Since they were not allowed to show these abilities before it just seems that they are doing better now.