Why do white girls seem so much weaker, generally speaking, in comparison to black women?

Black women seem to be more dominant and mentally and physically way stronger than white women.

Looking at their often curvier bodies, strong personalities and whenever there is a good old girl fight the black women seems to win and dominate the white women easily. In general of course.. how come though? coming from a blonde woman.

Why do white girls seem so much weaker, generally speaking, in comparison to black women?
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