The author of the site works for Brave. The results need to be taken with a grain of salt. Is is more private than Chrome? Absolutely. Is it the best browser for privacy? Ehhh…

He refers to the fact that the web app does not have default access to your device sensors, microphone, storage, etc.

It’s more convenient than Lutris for installing adhoc games, or multiple games in one bottle. Don’t get me wrong, when Lutris works out of the box it’s great, but oftentimes there’s no recipe on Lutris for a game (eg when they’re relatively unknown or new games) or the recipe is severely dated.