FWIW, a high SAT score won’t help internationals any more than it’ll help any other applicant. The international applicant pool is very self-selecting (something in the neighborhood of 0.1% of foreign students of college age come to study in the US), as our universities are some of the world’s most expensive, and the application process is fairly convoluted compared to many other countries’ systems. If given a choice between domestic schools and US schools, most internationals would choose the former for financial reasons, assuming similar prestige and quality. This means most international applicants to the US are those with parents who can afford to send their children to study in the US. Wealth, for any number of reasons, is correlated with better SAT scores. They’re also those with qualifications that make acceptance to US schools superior to anything in their country a distinct possibility.
On the whole, international students will have higher SAT scores on average. I’d rather be an international than an Asian applicant, but a high SAT score won’t help an international applicant as much as it would a domestic student, because it’s almost a given in many cases.*
*Note that this is for schools where finances aren’t much of a concern. USNWR college #862, with an endowment in the tens of millions rather than the billions, may well be more forgiving of full-pay internationals, whatever flaws they have in their profile.