Kickassangel - yes i agree we are talking about something a bit different.
But LRD I really do think you (and just about everyone who replied to the OP's request for data) are focusing on the wrong thing here.
The underlying premise of the 'women are the weaker sex' argument is that it is reasonable to divide the population into two groups and say that one is 'week' and one is 'strong'. And that therefore to treat them differently, make assumptions about moral rectitude etc...
All the focus on new data points and definitions of strength doesn't challenge this basic premise - it just tweaks it to show that there are women in the 'strong' group and men in the 'weak' group.
Imagine you are a teacher at school where the boys dominate the playground space, pushing the girls around and making them play around the edges. When challenged on this the boys say 'well we need more space because we are stronger and more athletic'. Do you
a) take their justification on good faith, but tell them they have got their data and their definition of athleticism wrong -- so organise a test (making sure to include long jump, which you have noticed some of the girls are very good at) in order to identify the strong half of the school and give them the privilege of dominating the playground?
or
b) say ' it may or may not be true on average, but everyone is an equal member of this school, and they all have equal rights to use the playground, and it is a general value and rule of this school that no one gets to push anyone around for any reason.'...and then organise a rota of some sort?
I have been arguing for b), where i think the focus on definitions and data takes you down the road of a).
I think it is wrong because it is unjust (whatever measure and definition of atheleticism you use to divide the school in half some kids will end up on the loosing side).
But it is also a tactical mistake, because I don't think the justification is made in good faith, it is just a convenient excuse to justify a culture of entitlement. The next day the boys may come back and say 'actually Miss, the reason we need the playground is because we are a bit hyperactive and if we don't get to run around every lunchtime we can't concentrate in the afternoon', and they next day they might say 'we need the playground more because more of us want to be professional football players so it is important to us', or they might say 'we are really good football players, and the girls are not, so they'd get injured if they play with us' or they might say 'we represent the school in the County Cup and unless we get to practice everyday the school won't win', or they might even say 'we need the playground more because we evolved as hunters to roam over the plains and the girls evolved as gatherers to delve into the bushes, its just the way of nature Miss'.
All these things and many others may or may not be true and some may be worth a response, or a science project....but the justifications can go on and on because you haven't started out with the principle of equality. Instead by focusing on definitions and measurement you have conceded from the outset that there may be some good reason why one group should be able to dominate another.