Its all in proportion to games budget, same way gta6 would be big flop selling only 50m copies coz its budget is humongous, cant compare flagship AC games sales with its humongous budget to games with relatively small budget/not that many ppl in the dev team

So comparisions to KCD2 or SF are not valid, comparision to BO6 is valid here, but again keep in mind it launched 25oct 2024 so if u only take its 2025 sales ofc it wont be as much as AC:S that launched this year
Ultimate proof of AC:S doing poorly is ubi stopping bragging after 3m active players announcement.