A woman has physiological advantages compared to men (less distance between heart and extremities - including brain - would be one), and as for strength it can be trained. The competitive part is based on will, talent, practice and last but not least chance, for both men and women. I'm sure there are women taxi drivers that have what it takes to be a champ but never had the key to get into motorsport. So I guess there's only one way to find out, no?