There's no denying that he's strong, but Kaguya's godly powers see to it that she remains superior to Konoha's Fourth Hokage.
The resurrected Kaguya deduces that Naruto and Sasuke have been given powers by Hagoromo and declares that she has no intention to fight.
Even her son, the Sage of the Six Paths, Hagoromo a legendary god-like figure praised his mother's might as being far above his own.