I put a recent game out on both Android and iOS (https://www.downwordly.com/). Admittedly it isn't apples to apples because the game modes and pricing models differ^. That said, iOS has made 10x more for me. Most of that is probably attributed to being Game of the Day and featuring in the word games section on iOS.

^iOS uses GameCenter for turn based multiplayer so a $2.99 IAP unlocks unlimited concurrent multiplayer games and some other modes, whereas Android is not free to play and instead is just $.99 to buy, but with no multiplayer. Probably way too many variables to provide any meaningful conclusions on the Play Store!