I think it’s such BS! Take McDonald’s in Germany and in Canada for example. German McD prices are a lot higher, but food at the supermarkets here is at least 2.5 times cheaper than in Canada (and of really good quality, I have to add).

I always kind of distrusted generalizations like “The most expensive city”, “The highest quality of life” etc., and this further proves that these ratings are mostly useless.

P.S. My accusation is misdirected in that the Big Mac Index is meant to be used for currency evaluations (more info at Wiki). Still, I stand by my point that generalized comparisons have little value, so you can’t really judge how relatively cheap or expensive something is by using just one example (McDonald’s in this case).