As far as I know, PSE does require GRE score unlike other prodigious universities in Ecnomics.
Some people might worry about the ranking of PSE... but too foolish to think about it.
https://ideas.repec.org/top/top.econdept.html
That link is very well-known for economic ranking in terms of authors, institutions, departments etc...
I think the evaluation process is quite objective, because that link estimates the ranking(of author or of instutions), based bot on the popularity, but on the publication.
According to that link, PSE is ranked 5th in the world, 1st in Europe. No more words