Africans vs. Asians, archaic ancestry

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Africans have an ancient archaic ancestor (not yet found)
Asians (including euros) have ancient neanderthal ancestors

1) Is this gulf in archaic ancestry the reason for the huge genetic distance between Africans and (eur)Asians?

2) What would our genetic map look like if you isolated the purely Human parts of African and eurAsian DNA? (IE: blotted out the Deni-Neander and the ghost African)