ZETA placed 3rd at Masters Iceland 2022. By your logic, it would make Japan the best region in the world at that time, as it was represented with just 1 team.
That's why I said maybe because in hindsight they didn't deserve the extra slots but it's possible that a region that produces a very good team could deserve more slots. Also why are you ignoring the fact that I said it is one of the determining factors in which regions is better and not the end all be all?