How does heredity not matter??? You either have the muscle fibers or you dont....
I talk to excersize philogists( sp ) as my reference. Yes it isnt 1979, and protein shakes are absorbed better, but natural food still absorb better, and you get better A.A. Its in mine and mr ohios opion that protein shakes are a waste.
Now your completly right about pro hormones, increased testosterone equals more power, and that is cheating. And in the long run its whether you were born with the right fibers or not.