For 200k (euros), that's $250k or so which is 35% federal (single filer), 9.3% California for 44.3%. (Which I would argue isn't that far off).
It would probably be more useful to compare effective tax rates and what you get for them. In the US, Social Security applies to the first $147k now (so on $250k that's 3.6% effective), but you also get a small retirement income. In Finland, I assume people get services in exchange for those taxes that you might be paying for in the US (e.g., healthcare, childcare, education, and retirement income), so you can't just compare using "what are relative tax rates like?" as a question.
tl;dr: taxes and services are nuanced!