Top knotch dogs come from lesser parents?

I just want to make clear in no way is this pre potent dog a cull . He is a dog that hunts his ass off but he is lacking in Vigor . He may be lacking in lungs , he may be lacking in speed , he may be lacking in looks department but one thing he does have that is above all the rest he has the HEART of a Lion and if he could speak he would tell ya he just soon die on a bad hog as he would any way else. Hog runs threw his veins and he puts this into his offspring and if out crossed correct his sons and daughters are hog hunting machines with his heart . Some may be different from me but frist and foremost to me a dog has to have the heart to get it done all else comes afterwards.