Let me say I disagree with you. At least on the 'other head' part. I am not sure if you have had the good fortune to examine these heads for many nationalities, as a physician, I am fortunate or unfortunate to claim, that they are not the same. There is a huge variation, some have got much bigger heads than others. If you are interested in giving you a link, since you keep on asking me that often, give me yoru email, I will make sure you get all the related literature in a zip.

Anyone from Congo here? :)