agree to ur last point but there is no harm in admitting that the average male might be better than the average female in hard labor (because of how we are built), and am sure there are equivalent examples for women being better, which i personally think this is one. And again i maintain and dont think that should mean gender should be a criteria in selection or appointment, merely observing the broader trend. It is like saying the average height for men in the world is higher than women - fact. But u wont dispute that because that is pure fact.
Yet we have a hugeee problem (because of our lens of assuming intentional / unintentional bias ) in admitting that because the two genders are different in some ways, there may also be jobs where (on an average and not in specific one to one comparisons) one gender may be better than the other!