Tbh I think that data is incredibly misleading. Every single generation of PlayStation has outsold the Xbox of the same generation(yes even the ps3) https://en.wikipedia.org/wiki/List_of_best-selling_game_consoles.

Additionally looking at the faq for that site it appears to get its data via page views. What % of console users actually use the browser? Is bet very few. Especially when you consider the ps5 has no built in browser.

You can access locally when the internet is down. You just need to set the login bypass for the local network. IMO it’s kinda a stupid step needed in setup but it is available.