It's not without exceptions (ie, the link you provided), but it does work as a general rule of thumb.
Not all Chinese stuff is bad. Not all American made stuff is good. But ON AVERAGE, most stuff made in the US tends to be of higher quality. Most stuff made in Western Europe also tends to be of better quality - depending on the country better than the US. Even though I love "Made in the USA" goods anything from Switzerland or Germany still tends to be of even better quality - again, as a rule of thumb.
And before I'm accused of being racist there, not all Asian countries produce bad stuff. Japanese goods tend to be of VERY good quality. South Korean stuff isn't that bad either - better than Chinese IMHO. For the most part it seems that the average quality of life of the people in a given country translates into better quality goods. Not only are they happier which produces a better product, but if they have enough money to actually be buying and using the goods they're making then they will take a certain sense of pride in its manufacture.