Pokemon will likely sell what AC's lt hits within it's first 10 months or at least by the time the next game arrives, AC has never even come within range of matching the first mainline Pokemon game's sales on the same platform even with the series growth (P/D outsold Wild World by 6m and X/Y outsold New Leaf by 4m) if anything this should be more AC can outsell the following games which is even a struggle itself as AC has only ever managed to outsell one mainline Pokemon after the first which was USUM which came out at the end of the 3DS' life.
To the people who are also saying about growth do you really think AC will have growth and Pokemon will have none? PLG has very possibly outsold every AC game in 4 months providing potential growth before SWSH has even landed.
I think this Animal Crossing is going to the first time a lot of people buy it. Would not be shocked to see Animal Crossing cross the 20 million mark which is more than what Sword/Shield will sell
No Animal Crossing game has ever crossed the 15m mark. Every single first mainline entry in a Pokémon generation has sold at least 15m.
What exactly makes you think Animal Crossing has more room for better sales than Pokémon does? Pokémon is one of the most widely recognizable franchises in the world, in and outside of gaming. It's known by just about everybody, has had almost a billion downloads on mobile (a figure AC Pocket Camp doesn't come even remotely close to), and for decades has had people dreaming of a home console mainline release, which is finally about to happen, on an extremely successful console whose main releases have all been breaking sales records left and right. Why, exactly, is Pokémon Sword/Shield not going to outdo its predecessors? Honestly I just don't see how. 20m copies sold is pretty much the worst case scenario for Pokémon, whereas it's very much the best case scenario for Animal Crossing.