This is your opinion, and I don't think you could prove it as fact. Sure, you can name guys like D. Rose who probably shouldn't have even got into college, but you also have guys like Brandon Knight who had a 4.0 all through High and College.
What do you mean by super-human genes? Guys like Kevin Durant, and Bron are anomalies. Patty Mills and Isaiah Thomas are like 5'10. Tim Duncan is tall but not a high flyer like Blake Griffin. Not every NBA player has a 40 inch vert, but they work hard on their skills like shooting, passing, etc