I think it's a pretty lax assumption..
In a way, a lot of the types will fit in fairly well with their type description..
So, that being said, I generally fit into the ENFP description, though I am neither tall nor short and full. I'm more medium height and fairly slim. I don't think I walk with my legs apart, but I can't be so sure. I do walk fast and energeticly, and I think my nose is straight.
Still..interesting stuff, thanks for sharing.