A question from a different angle:
Watching Marianne Vos win on Sunday, she's obviously a good sprinter. She can also win GC races. This is not usual in the men's peloton, as male sprinters can't climb fast enough to keep up with the lighter climbing specialists due to power-to-weight ratio stuff. In the past I think there were men who could do both - Merckx I think is an example - but these days men train specifically to do one thing or the other.
However women don't build muscle to the same extent that men do; so I was wondering if there will always be women who can do both, can be all rounders in a way that men can't?
Does that question make sense? I know what I am trying to say, and have tried to be clear without writing a very long essay.