Thats a lousy article. Its based on 3rd party estimates of sales of a game released only 2 weeks before the article date. And, its a 2017 console title released on iOS in 2024, so presumably most fans of the series had already played it (it was released on 8 platforms before iOS).

"AAA" is kinda a vague term, but there are definitely some big budget games on mobile that do massive numbers (hundreds of millions of dollars).