This holds true even for low income jobs, McDonalds pays nearly 10$ an hour in the US vs 4.35 GBP in the UK, or 6.50 EUR in Germany (there are comming minimum wage changes in Germany so it will increase to about 8 EUR in 2017) and US those workers are taxed at considerably lower rates.
There is a better 'safety net' in most European countries, but there is a lot more opportunity in America. It's 100% true that 'anyone can make it' - as long as 'making it' means having a job, owning a home, in a regular place like Cleveland or Pittsburg or whatever.
Europe has a much, much stronger class system than the US.
American companies have tons of workers and professionals who came from poor situations. Europe is not like that at all.
A lot of what would be a college degree in the US is done though trade schools in Europe. I also think there are much stricter requirements on what the degree is in most countries, as in the won't fund a lot of arts degrees.
Source?
The US poverty line household income is $22,541, this is more than the median income in Poland, and not that far from the median household income in developed countries like Belgium.
That's not saying there are rivers of milk and honey flowing in the EU either. But over there, at least you still have access to decent health care even if you're at the rock bottom, and at least your kids could get decent education so they achieve escape velocity.
But here? Once you're below a certain level, society just throws you on the dung heap. Leaves you to your own proverbial "bootstraps", however stupid that meme may sound when you see how things could be handled differently in a civilized world.
Social mobility in Europe is also really not great especially once you adjust for the immigration, you also need to account for the fact that social mobility studies in Europe are based on the income level of parents and grandparents, both WW2/Eastern Block and immigration from Africa, Asia and the Middle east inflate the social mobility figures considerably.