But UK would be worse than USA if ...
... if the data was more logically expressed, eg as a percentage of the population -- which makes more sense, because clearly more people means more of them doing things which might give reasons for governments to invade their privacy.
For example, though USA requests are more than three times those of the UK, the USA population is about *five* times larger. Re-express that in percentage terms and the UK would truthfully show as much worse than USA.
Of course, you'll have to do all the figures to see how other smaller countries affect the figures, but clearly USA and Brazil aren't actually the worst two.