Only Hansen knows...everything else is speculation...i will say, "maybe".....
i think it`s the same as with roids. So many people take them but don`t look like there "on". At the other end of the scale are the BB-Pros. So it`s a very wide range of what a human Body can look (or how big muscles can be build", "on" roids or "natural".).
it depends on genetic, passion, ......and a lot of time in the gym.