Yes. It is "interesting" but Tucker admits it depends how you do the matching. The Comrades is a bit special and if a man and woman can complete a marathon distance in 3 hours clearly the woman is relatively a "better" runner than the man and arguably should beat the man at the Comrades over full distance - she is just "better".
Presumably analysis could be made on the comparative male/ female "splits" of elite runners in say the London Marathon where conditions - nice flat tarmac - are comparable.