You're probably working in a domestic company which usually pays less than offshored jobs by a large transnational (and domestics say in Russia were paying significantly less than the offshored). I don't think many companies do significant offshoring into Western Europe though.
Comparing salaries between countries with vastly different approaches to taxes, health insurance, living cost, hidden side costs etc. is hard and can easily be hugely misleading.
Not even including any subtle things just what "before and after taxes" means can differ. E.g. where I live "after taxes" does for most people not just deduct taxes but also the base health insurance cost and some other things (but to make it more fun, only most but not all people. This means what after tax means can differ between neighbors ).
And then there are so many hidden cost which can influence taxes, e.g. in some areas you practically have to have a car this means that in effect the cost of a car isn't that different from a fixed sum tax, if you consider social standards it even scales with income up to a certain point income like most taxes (and cost x10+ if you can't drive a car for health reasons). On the other hand if you live in a area with decent public transportation and then a car is a Luxus good, but someone has to pay for the public transportation, and if you area isn't overrun by well paying tourists this means you likely pay more tax (but as public transportation tends to scale better you still likely save money especially if you aren't wealthy).
Anyway so comparing after tax in vastly different countries is IMHO a folly. And even before tax is tricky but you have to choose something. I guess another option is "what to frugal living people with reasonable health insurance and rent have left over at the end of the month" is theoretically the better statistic, but just not practical.