ルフィ. Oct 9, 2022. #6. The narrative suggests that Momoshiki is stronger than Kaguya. Kaguya couldn't oppose him without an army according to the movie novelization written by the author. Furthermore, Kaguya confirms Sasuke's suspicions by warning people about the pair in her scroll, where she refers to them by name.
Now we have that Kaguya is equal with isshiki or even litle bit stronger. (kaguya-chakra fruit >= isshiki) However a battle between these, the winner would be kaguya, because she now is way more stronger than her orevious form, with new abilities and she knows how to counter isshiki abilities.
4XJL.