I agree that most if not all women would not be world champions.  But most if not all men will also not be world champions.  

And no it doesn't mean the end of female participation in sports.  People would participate in soortsa that they enjoy, for the love of the sport, not some arbitrary trophy.  

Sports should adopt the ladder system that gaming/British soccer uses.  The lower leagues would likely be mixed with men and women competing together and it's likely that the best teams would be all men.

Also this logic will lead you to color segregated leagues in the NBA.