It's not, I just didn't specify it because for me it's logical, I highly doubt OP wants to move to Belarus, but yeah go ahead and pick the absolute poorest and least likely countries anyone would immigrate to when they say "Europe" and tell me about moving goal posts ...
"average", "money", yeah sure, the average american probably make more money. And yes you're right, the poorest Americans make more money than the poorest Europeans, but money isn't all. Otherwise nobody would ever complain, they'd be as happy than Norway, which is obviously not the case. https://fee.org/articles/the-poorest-20-of-americans-are-ric...
If quality of life = being able to afford material goods then sure, but I guess that's were Europeans see the world in a different way. I'll take min wage, job security, healthcare, free education, more vacation days, paid sick leaves, paid parental leaves, guaranteed minimum incomes, &c. If you're a min wage worker in the EU you have a much less stressful life than in the US, it's not even comparable. They're at least half a century late in term of social/workers right