Which game will sell better, Splatoon or Xenoblade Chronicles X?

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XCX I expect to land in the 700k-1m range lifetime.

Splatoon is more of a wild card; as a new IP it's unclear whether it will get off the ground. If it doesn't, 700k lifetime. If it does, 2m isn't out of the question. If I had to guess, I'd say it will end up around the million mark.