It took 4 people to defeat kaguya sasuke naruto kakashi and Sakura. Kashin Koji stated that just power is not enough to defeat Jigen.

Boruto 5 Characters Jigen Could Defeat 5 He Couldn T Cbr
I know most people say that jigen stronger than kaguya but thats not true.

Is jigen stronger than kaguya. Jigen is fighting weaker versions of naruto no more sosp jutsu or power and sasuke 1 arm no more sosp powers so right now kaguya wins. Kaguya is stated as being much stronger than Madara even while she wasnt restored to her full power. Momoshiki absorbed 50 ninetails chakra of naruto and died to a 50 ninetails rasengan.
In addition Jigen could be stronger than NarutoSasuke AND be weaker than Kaguya because there is a abism between Kaguya and NarutoSasuke level. They cant even beat Hagoromo alone who is only 12 Otsutsuki. Hagoromo needed his brother help to seal Kaguya which took them months.
Theres nothing to suggest Isshiki is stronger than Kaguya. Karma is the key to defeat Jigen. Jigen is strong enough to spar against and pressure Naruto and Sasuke with rather ease.
Karma is basically all of Jigens strength. Something JigenIsshiki dont have. Theres multiple reasons why I think so.
All of his chakra and physical strength comes from Karma as well. Momoshiki was stated to be a threat greater than Kaguya technically this was about Momoshiki and Kinshiki but Momoshiki was more of a threat than their combined force after he fused. Jigen is just a pale copy at the moment.
Kaguya is the strongest Ostsutsuki. Even if Jigen is slightly stronger than Kaguya she would easily outlast him in a fight which is why we believe she would be victorious. Kaguya killed prime Isshiki whos stronger than Momoshiki.
Kaguya has more destructive attacks at her disposal and way more hax tbh. I cant even tell if Isshiki is as strong as Kaguya was at the end of Naruto or if Naruto had simply gotten so weak he couldnt beat someone like that any more without enormous sacrifices. Amado revealed Jigen is Isshikis vessel in Chapter 46.
Even in the area of physical stats its not even clear cut that Jigen has better physicals than Kaguya. Plus technically it wasnt them who beat her it took a jutsu from the sage of the six paths himself. Isshiki took over Jigens body after Kaguya betrayed him.
Its basically impossible to tell how strong anyone actually is in Boruto. Changing objects size and storing them in a special dimension. Eida vs Kaguya.
I heard about that Eida is stronger than jigen and momoshiki so is she able to put Kaguya down. The seal also grants Isshikis signature ability to Jigen. So is Code already stronger than Jigen.
Kaguya is also immortal and can regenerate from any wounds. Kaguya Current Jigen Momoshiki Eventhough Jigen beat the shit out of Naruto and sasuke i still think he is not really stronger than momo cuz how of how the duo fought in both fights they were more ruthless against momo eg - their teamwork was better - Sasuke used ameno in a smarter way against momo. On the other hand Kaguya Otsutsuki is someone who fought her children for months without resting which just goes to show how much more stamina she has.

Jigen Vs Kaguya Battles Comic Vine