It depends on what priority you give to each category by which a country can be rated.
If you consider military power and scientific progress to be high priorities, the US is at the top.
If you consider freedom of speech, press, religion, assembly, and equity of rights to people, irrespective of gender and ethnicity, to be important, the US is near (but probably not at) the top.
However, if you consider health care, disparity of wealth, trade deficits, and being well-liked by other countries to be important issues, many countries would place higher than the US.
It all depends on what you consider important in a country.