I have come to the realization I probably have shorter than normal legs for my size (5'10"). I can't tolerate 175 mm cranks at all, 165's and 170's are my preference. But I don't look at it as having "short legs" I look at it as having " a long trunk". I have 130-150 mm stems on all my road bikes, and every seat is slammed back as far as it will go. I love the long low horizontal riding position.
I figure, if you are turning the cranks around and keeping up, what's the difference? I used to think there were advantages to being a taller rider, but the vast majority of past Tour de France winners are between 5'8 and 6' tall. For whatever that's worth.