That's evidence but weak evidence and I think group size is a more likely culprit (we really ought to be homo gregalis rather than homo sapiens). That means a

That's evidence but weak evidence and I think group size is a more likely culprit (we really ought to be homo gregalis rather than homo sapiens). That means a conflict between a group of sapiens and neanderthalensis is more likely to go the sapiens's way. But also the secret of our success is that we're so good at cultural transmission and evolution. And when the children of a tribe can learn from the best of 20 instead of the best of 6 hunters you get both a higher level of skill and more rapid cultural innovation around techniques.