I think metabolism is a huge factor when considering the above examples; the guy that eats only healthy foods might not have an efficient metabolism and be doing enough exercise to burn off the calories he is taking in.

Also, the big guy that takes loads of pills (e's) and eats what he wants... I don't think this is a good example at all and it sounds like you also take them too (perhaps an explanation for you and your skinny jeans?).

On a side note, the link is throwing a 403 :(