Well in this case, B killed everyone that looks like and shares an ethnicity with A. And if C enslaved B and B's family, but C had 1/4 of the same racial ancest

Well in this case, B killed everyone that looks like and shares an ethnicity with A. And if C enslaved B and B's family, but C had 1/4 of the same racial ancestry as B, he was spared. So not really a 1:1 comparison.