Let's avoid a situation where, due to difference in opinion or understanding, we start excessively devaluing the other party.
Any creation has an elemental balance and specific nature, as shown by astrology. This applies to races, and over the course of proper evolution (not what has previously happened on earth), each race would develop and "bloom" into their own specialties and purpose.
Blacks exhibit aspects of fire and earth, but to curses by the enemy and lack of development, this manifests negatively into crime or excessive materialism. We can see an opposite situation occur in asian races, who exhibit aspects of air and water. In asian societies, although they have a strong communal bond (Cancer) and intelligence (Air), they are still plagued by a lack of sex and childbirth.
Each race has their own specialization which is distinct from their current place "dimensionally" or energetically. General advancement will lead to each race improving on their problems, but it would still not mean one could fully substitute for the other, hence why the original differentiation. Each will serve Satan in their own way.