The latest numbers released for Nintendo's fiscal year shows Zelda BotW at 17.41 million copies and Pokemon Sword/Shield at 17.37 million.
Quarterly numbers for Pokemon's 2nd quarter was 1.31 million and BotW's 13th quarter was 1.07 million.
Pokemon should certainly pass Zelda this quarter, but likely not by much, and with Pokemon being a more heavily launch focused series and given BotW's insane legs it seems likely that Pokemon's quarterly numbers will fall below Zelda's in short order, and much like Zelda now passing back Mario Odyssey, I think Zelda will pass back Pokemon later this year or next year after losing the lead in the current quarter and end up beating Pokemon in lifetime sales.
What do you think? Where do you see these games ending up?