The word tax is misrepresentative - they don't buy you the same thing at all in Europe and in the US. Although most European also use tax to name anything they have to pay to the gvt agencies, a significant part of it buys you things you have to pay for yourself in the US, like health care and retirement.

You can argue about the services you get, but comparing directly taxes without taking into account the services provided in return is disingenuous.