Jesus you are comparing Flex, one of the greatest best blessed genetically gifted bodybuilders of all time and comparing him to Halo as basis for your argument? Come now I actually have you down as one of the more intelligent posters on here.
I could say have you ever seen pic of Nasser when he was a kid and compare him to myself as justification....don't be silly.
Because it really makes sense for him to be a racist and have a black female partner and half black child, explain that one to me, how does that work? 
If anyone can't see its just and internet thing with him you are the crazy ones not me. Still I am not saying it makes it right.
A ignorant mind will never comprehend.
As far as genetics, i picked Flex because he was a ectomorph, it's been said time again in the Bro Bible that ectos respond well to gear, i don't know the truth to that.
But, just because someone is sknny doesn't mean that their genetics are worse.