Board Thread:Theories and Speculation/@comment-26479810-20191214162345/@comment-32685487-20191214172547

War Arc Rinnegan Sasuke, and War Arc SPSM Naruto each had half of Hagoromo's chakra to use at the time.. so they were artificially boosted up until they expended all of his chakra at VOTE2 so of course they were stronger then. After they used all of Hagoromo's chakra I would say they were weaker than their adult selves though.