There have been discussions on this in other places that I've read. I don't have any super motleys because I do mainly locale specific. But it was stated that it's not a difference in head shape, it's the fact that they're a uniform color and it tricks your eye. But if he's saying they're actually different, than i don't know. I'd say some locales most definitely have different shaped heads than colombians and any B. c.c.