Ya, but the Vitruvian man has two legs closer together, too. Da Vinci was showing at least partially that the length of one's legs don't change as you rotate them outwards. Notice also that the wide stance is standing on the bottom of a circle. (Should we do people with two left and right arms and legs too? :rolleyes:)

I'm guessing odf did his wide so it would be easier to make clothes for… but it is a pretty wide stance for that even.