You are such a mess. Platforms are different to regions. You are mixing everything together
Yes Korea is banning Ana more than the other regions.
If we hypothetically remove Korea from the equation, you would have a global PC chart where Ana is very close to Mercy.
But in reality the global PC chart shows Ana has a big lead over Mercy in Masters+, which means that the big lead of Ana over Mercy in Korea has indeed carried the global PC chart.