Admittedly I am not up to date on the latest developments but as far as a couple years ago the PWA runtime on both ecosystems was significantly stymied in compa

Admittedly I am not up to date on the latest developments but as far as a couple years ago the PWA runtime on both ecosystems was significantly stymied in comparison to the APP runtime. No access to real storage functionality, significantly less platform APIs, yada yada. Sure, you could build "better (installable) websites" but even to get standardized stuff like background execution or notifications working was either impossible or a long series of jumping through hoops. Even installation prompts bugged out way too often. But to be clear, if that isn't the case any more I will be positively surprized by either platform provider.