He was 7'3" and 203 lbs before coming to the USA. He was completely underweight. Even though Max is 240 lbs now, he is still underweight. The american food hasn't made him fat yet.
Lin is pretty real, but he needs to become an elite shooter to have a shot at the next level, in which case I can see him as a poor man's Kirk Hinrich. Besides, I have a feeling he may not want to become a professional athlete considering his intellectual gift.
All the NBA groupies that he could want and millions of dollars vs being a regular joe working for the man. You are right. It's a hard choice.
Might surprise you that for some people, money and groupies are not the only meaningful pursuits in life.