Have you seen international enrollment at English universities lately? As well, in both England and America, international enrollment for undergraduates (and taught masters) has as much to do with money as talent and ability. The US could do better with encouraging students to stay in STEM, but this is also about terrible progression and not just talent.
Let's not forget how many NEETs the UK has -- we all focus on the high end, but that's not all there is. Both countries have quite some work to do on vocational and technical education to compare to the likes of Germany and Switzerland, which again have their own tradeoffs because of selective education.
I genuinely believe that my SN kids, especially the 2E one, are more likely to achieve full academic qualifications in the USA than they are in England, where too many kids still have to choose between an environment that can handle ASD and one that provides a full academic curriculum. One of my kids might have really thrived in the English system but I think the other two would not.
I don't see how you can say that the USA all "feels the same", like Arizona and Maine feel similar at all except they have the same fast food chains. Plus, you can go to other places in the Americas.
Yes American sports are often derived from British ones. But people play soccer here too. Rugby and cricket are heavily tilted towards ex-British colonies. There are other countries that play basketball and baseball and ice hockey. (Baseball is played in Japan, the Caribbean, Taiwan, Korea.) If you are somewhere with a lot of West Indian or South Asian immigrants they will play cricket.
In my area one of the most popular school sports is lacrosse which was invented by Native Americans in the St. Lawrence Valley.
(I certainly don't think the US is perfect, far from it, but there are some stereotypical complaints I just don't like.)