But in the US, kids below 15 are not counted, this means that the population is artificially set at 80% of its real number. These PPP income are pretty hard to

But in the US, kids below 15 are not counted, this means that the population is artificially set at 80% of its real number. These PPP income are pretty hard to compare. You have so much local variability within a country that you can only really compare the same kind of family situation in the same kind of city. You also need to compare against what you get from the system. For example, in the US, a part of your revenue is in your PPP if you are not ill, but if you get a cancer, you are good for a good stack of expenses depending on your health insurance, in the EU, the health insurance will cover all the costs. If you are in Denmark, you get access to free education (you even get paid to study), in Germany education is free. As a French who has been working/living is several countries in the EU and have friends nearly all over the world, I can say, the real factor, if you are an engineer, is where you live, that is, the cost of housing. Because the salary as an engineer will be nearly the same in the country you live but the cost of living can vary a lot.