DC: No one is doubting your expertise. (Although some comments are a little presumptuous). I also understand it's difficult to accept other peoples limitations when you've worked hard at overcoming yours, but that doesn't discount the genetic factor. That would be like me saying, "I can't believe someone can't sing as long as they practice and learn how." Well, guess what? Some people just can't sing.
140 pounds at 20 years old isn't that abnormal. Lots of people are thin at that age and fill out later. The fact that you reached 242 "drug free", as you say, proves that you had the genetics for growth. I guarantee there are thousands of guys who work as hard, and as smart, and could never achieve that -- not without getting too fat at least.
And that brings up another point.
Size is easy. ANYBODY can get big if they eat enough and lift. That ain't rocket science. But you must realize that getting bigger isn't everyone's goal. And insane obsession to a single goal which offers no opportunity for financial gain is not a practical or even a viable option for most people with a life.
It's always best to learn lots of different ideas. What DC and myself offer are completely different. My work is designed to dispell myths, expose the frauds, question the the common thinking and help the "genetically challenged" bodybuilder to avoid pitfalls and make the most progress in the shortest possible time. DC's methods are for the guy who wants to be as huge as possible and is willing to do whatever it takes to get there. If that's what you're looking for, DC's your man.
There's room for everybody.