This article is non-sense from a technical point of view: there are so few details on what is tested, on which conditions, ... There for example is no mention

This article is non-sense from a technical point of view: there are so few details on what is tested, on which conditions, ... There for example is no mention of the php7 version tested: 7.0? 7.1? 7.2? No version of hhvm either. No clear details on what the tested code does: what kind of setup/options is used, which Wordpress page(s) is actually called. How much memory the machine has, how php is configured regarding the opcache, ... Also, why posting this to HN now? Php 7 has been released more than 2 years ago, those improvements have been discussed a long time ago.