Although the results are valid, the value of this test is precisely zero.
Playing on pc differs from playing on a console - you can have 50 opened tabs in your web browser, play music through Spotify, Tidal etc., Discord app running, maybe downloading something to use later. F.e., if I die in a multiplayer match I may jump to Windows and browse the internet and move between multiple apps. How will it impact the smoothness of the system will all the things running simultaneously? Nobody knows.
The above stated is exactly the reason why somebody would consider 5800x or 5900x over 5600x "for gaming". Because who just turns on the pc, starts up the game, and does nothing else? And not because we know that 8-core CPU will help, but it will mitigate the potential problems tremendously.