I'm sorry, but comparing just the gross pay between EU and US is superficial at best.
(Taking Germany as an example, single, no kids) If you're offered say 100k in Germany - due to heavy tax-burden and social security costs - you will get less than 60k net. But what is hidden from your paycheck is that the company has to double your social security. So in reality you're getting paid 115k.
If you make more than 250k, that means you get an extra slap on the wrist: "wealthy tax" means every € you make above 250k gets taxed at an excessive 45%. Which is why at that kind of pay employees seek out different kinds of compensation schemes. And because of these schemes those people often aren't count in the employment statistics and thus lower the average pay.
On the plus side: From what I hear from European expats in the US, a lot of your high pay gets eaten by having to pay private enterprises for things that are provided by the government in Europe (getting a degree, good schools or kindergartens, healthcare, using the courts/legal system etc).