My guess is that it'll do better in America, but NoA is still hilariously bad at getting these sorts of things out - at least NoE has an official anime channel.
In fact, I'd wager that in the absence of any mainline Pokémon game this year, NoE will do a better job with the advertising, but more in America will get to view the anime.
So, Europe it is.
But, please do note: This is relative to hoe large the install base is in Europe.
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