>>32577453Ehh I'm a Primafag but I think it's unclear between it and Decidueye who's more popular in Japan. And for Japan merch sales, Decidueye's plush honestly just looked bad while Primarina got something that looked really cute and comfy. There were also some metal charms released where the sales were Rowlet Line > Popplio Line > Litten Line, though people could have bought them for one pokemon rather than the line as a whole.
Mimikyu and Vulpix still reign over everything though