Why so defensive? 'Add 50kg to your max bench in only 8 weeks!' (Muscletech ad, Flex Jan/Feb 2010) is a direct claim, similar to 'Car X is capable of reaching Y speeds'. We just place higher standards on car manufacturers than we do the supplement industry.
The bodybuilding industry is just generally full of shit - its not even like there are a handful of people with the genetics/work ethic to 'make it' - as the editing shows even they aren't the real deal.
Its sad they couldn't put together a magazine filled with 80-90kg guys with 8-10% bodyfat, articles on training 3-4 times a week and guys benching 180kg. It would be impressive to anyone who wasn't a 14 year old with a dragon ball z fetish and it would be honest.