Objectively, pendantically, you’re right. The actual sum of money being paid to you the employee is higher.
However, if you are “earning more” but also “paying more” then your purchasing power is lower. And when people mention salary, what they really mean is purchasing power.
It’s also true that US companies don’t have to pay certain overages that are required in the EU.
For example. I earn 60k (SEK) per month, my employer pays out 90k (SEK) due to insurances, social securities, pension plans and so on.
And things like that can’t be factored in easily, as it’s not usually known to the employee- so it’s often apples to oranges.
No: salaries are obviously higher.
Cost of living can be also higher and quality of life depends on that and many other things.
Incidentally, I know a number of engineers who turn down offers to move to the US.