I loved this article where someone started with the goal of writing an article about how much faster nginx was, but then discovered the opposite (and for some reason didn't change the title of the article, which is hilarious)... both because it showed the author "cared", but also because it showed that people just assume what amounts to marketing myths (such as that Apache and mod_php are ancient tech vs. the more modern php-fpm stack) before bothering to verify anything.
When I moved things from Apache -> nginx years ago, I did it not because it was faster but because the resource requirements of nginx were so much more predictable under load.
https://www.eschrade.com/page/why-is-fastcgi-w-nginx-so-much...