How different is the top quintile of earnings between countries? For example (made up numbers), if the top quintile in the UK earn $100k and the top quintile in

How different is the top quintile of earnings between countries? For example (made up numbers), if the top quintile in the UK earn $100k and the top quintile in the US earn $400k, it's not really the same comparison to move from the bottom to the top. Going from earning $20k to $100k is going to be different than going from $20k to $400k. I suspect the top is higher in the US.