I mean, the UK isn't exactly doing _great_, if you go by the thesis that they're showing favouritism. It's about 0.5 points above the US, mostly due to better electoral process and political participation (which seems... fair?) but 1.5 points behind the highest.

For what it's worth, the UK also does better than the US in the Freedom House index, which is _funded by the US government_.

In what way do you feel it's flawed? Based on what you know of the methodology, what would you change?