The test is fake, there isn't a real test, it's a list of someone who made a test, without any indications in which conditions, testpage and browsersettings it was made. I see this "testpage" in several other social networks and most of the users said that is a page to promote Brave, what I also think.
If someone nead a real privacy test, he can use Browserleaks or Panopticlick
These test the real privacy of your browser and what are the problems, when they exist.
synthetic_sniff wrote
Yet I will not switch to Brave.
Firefox forever.