But if you read my original post and my 2nd one, I emphasise that it is not the best in any given sport but rather your personal favourite, something that with hindsight I should have made clear in the heading of the my original post.
Having said all that, I still believe that our heroes, or personal favourites if you like are all men. I think that we naturally associate sporting prowess with men and tend to subconsciously categorise sportswomen to a lower level. And yes biological factors play a huge part in our choices. It's quite obvious why we choose Maradona over some US Ladies footballer or Roger Federer over Serena Williams or Jack Nicklaus over Laura Davies.