1) There is an on-going controversy about women ski jumping at the Olympics. Allowing women in some high level ski jumping competitions in a recent thing. Most sports have separate Olympic categories for women. 2) "Currently, women ski jump internationally in the Continental cup. On 26 May 2006, the International Ski Federation decided to allow women to ski jump at the 2009 Nordic World Ski Championships in Liberec, Czech Republic and then to have a team event for women at the 2011 world championships. FIS also decided to submit a proposal to the International Olympic Committee (IOC) to allow women to compete at the 2010 Winter Olympics in Vancouver. On 28 November 2006, the proposal for a women's ski jumping event was rejected by the Executive Board of the IOC. The reason for the rejection cited the low number of athletes as well as few participating countries in the sport. The Executive Board noted that women's ski jumping has yet to be fully established internationally. Jacques Rogge, president of the International Olympic Committee stated that women's ski jumping will not be an Olympic event because "we do not want the medals to be diluted and watered down," referring to the relatively small number of potential competitors in women's ski jumping. Some critics have pointed out that the number of athletes should not be a reason, citing the numbers of competing athletes in women's ski jumping. At present, the number of women ski jumpers exceeds the number of women competing in ski cross, which has been included as an Olympic sport for the 2010 games. It has, however been noted that while the number of women in ski jumping is not insignificant, the field has a much wider spread in terms of talent, in that the top men are all of a similar level of strength competitively, while the women are more varied, even in the top tiers. A group of 15 competitive female ski jumpers filed a suit against the Vancouver Organizing Committee (VANOC) claiming that conducting a men's ski jumping event without a women's event in the Vancouver Winter Olympics in 2010 would be in direct violation of Section 15 of the Canadian Charter of Rights and Freedoms. The arguments associated with this suit were argued 20 to 24 April 2009 and a judgment came down on June 10, 2009 against the ski jumpers with the judge ruling that though the women were being discriminated against, the issue is a International Olympic Committee responsibility, and thus is not governed by the Charter, and finally, the Canadian Charter of Rights and Freedoms does not apply to VANOC. Three British Columbia judges unanimously denied an appeal on November 13, 2009." Source and further information: http://en.wikipedia.org/wiki/Ski_jumping#Women.27s_ski_jumping 3) "For most of human history, athletic competition has been regarded as an exclusively masculine affair. In antiquity, athletic competitions were held among warriors to prove their fighting prowess or otherwise demonstrate their virility. The exclusively male origins of competitive sport carried over into the Ancient Olympics, where women were not allowed even to watch competitions, much less compete. However, a separate women's athletic event, the Heraea Games, was eventually developed. Few women competed in sports until the late nineteenth and early twentieth centuries, as social changes in Europe and North America favored increased female participation in society as equals with men, as exemplified by the women's rights movement. Although women were permitted to participate in many sports, relatively few showed interest, for a variety of social and psychological reasons that are still poorly understood. The modern Olympics had female competitors from 1900 onward, though women at first participated in considerably fewer events. Concern for the physical strength and stamina of women led to the discouragement of female participation in more physically intensive sports, and in some cases led to less physically demanding female versions of male sports. Thus netball was developed out of basketball and softball out of baseball." "Today, women compete professionally and as amateurs in virtually every major sport, though the level of participation typically decreases when it comes to the more violent contact sports; few schools have women's programs in American football, boxing or wrestling. However, these typical non-participation habits may slowly be evolving as more women take real interest in the games, for example Katie Hnida became the first woman to ever score points in a Division I NCAA American football game when she kicked two extra-point field goals for the University of New Mexico in 2003. The practical recognition of basic physiological gender differences has not impeded the development of a higher profile for female athletes in other historically male sports, such as golf, marathoning or ice hockey." Source and further information: http://en.wikipedia.org/wiki/Women's_sports

The center of gravity is different. The aerodynamics of the bodies are different.