well, this skulls are little simplified. But maybe you see images which are opposite, skulls with exaggerated features. Yap. some blacks have really weird skulls, depending of tribe - nation. And there are also individual differences. Asians also have sometime crazy shaped skulls, but you can also see weird variations among whites. So in this case sculptors make 'average' representation, without extremes. Although they are good representation of crucial features, faithful to the original. So, you see skulls on internet? I can bet that I see much, much more during my anatomy studies. But you are genius which know better, right? So you go in full retard, aggressive, arrogant mode. It's not surprise that whites lose this battle with so much morons on 'his' side.