That's not true.
I have the worst genetics for bodybuilding. After training for years, I did a first cycle, very low dosages mind you and only gain like 5 pounds. Strenght was though the roof but even at 3 grams of test a week, I probably would still suck. I never would go to that extreme for a plastic trophy and prefer my swimmer's physique anyways (it gets me pussy, go figure)
I have respect for guys that have the balls to do that (no homo).