IME if you plan a short migration for a project, witch means go, earn enough money, come back and you do not need ANY KIND of health services in the foreseeable meantime it's ok. If not...
USA level of services is third world compared to EU, bureaucracy is byzantine, surely you might earn much more in absolute terms, just to spend much more in countless fees, you get, perhaps depending from a place to another, very nice nature, nice colleagues, parties, spaces, ... It's an experience, but definitively not a country I'll ever choose or recommend compared to EU. Financially is a nonsense if not for a limited period of time, being healthy, etc.
My suggestion is NOT just asking about salaries but also about cost of living, about all the bureaucracy you need, about how to find a lawyer (because yes, you need one, even just to subscribe to a local gym) etc.