Ed, that's an interesting interpretation. Does it have to do more with size of airways or other body size factors or with gender? Honestly, size would make more sense in some ways.
On a tangent, Ed, you seem to be upset about your height. Here's some food for thought that may make you think twice if that concern involves running. The reigning Olympic marathon champion is 5'4″. The current marathon world record holder is 5'5″. The current 5000m and 10,000m record holder and reigning Olympic and World 5000m and 10,000m champion is 5'3″. Generally, it seems like the 5'3″ to 5'8″ range seems to be a sweet spot for a lot of great distance runners.