You're absolutely right. Some of these guys are arrogant snobs and just want to justify their purchase by "laughing" at the supposedly pathetic fools who dare compare their ordinary MacBook to a pro. Truth is that is a rediculous misconception based on outdated models (ibook vs PowerBook). I've owned both the MacBook and the pro. The pro has better grahics, better sound, keyboard, ports and overall better capabilities but to think for one second that Apple uses special parts with extra quality control is retarded.
It goes both ways. Many reg Macbook owners are so defensive of any critisism of their laptop they make stuff up. There are major differences between the consumer grade reg Macbook and the Pro. They just like to think they have a 13" Pro when they don't. Whatever makes them feel better about their purchase I guess. Both are nice, but the Pro is much better. Yes you do pay for it. To single out one person or group is wrong when more than one person or group is bashing the other.