Minato had survived the encounter that night and Kushina had sealed Kurama inside of them as it happened.
Would naruto be much stronger, weaker, about the same? Not just physically, but mentally, and all that?
Also how would it affect things such as sasuke, Itachi ,etc. Thoughts?
Kurama is altering Naruto's chakra control from his birth, and he mastered rasengan in days although Tsunade said it was impossible, she said that was prodigious although he was handicapped.
With an unaltered chakra control, Naruto would be a prodigious prodigy never seen before, he would solo Sasuke pretty easily at any time of the story.
Naruto has always been alone with nobody to teach him techniques except his teachers, with his parents teaching him clan techniques, he would be able to solo anybody except juubi jins.
And don' t forget that Naruto would still be the child of the prophecy and host the 9 beasts (RSM) at some point.
Naruto would definitely be way stronger than what he is now.
If they survived? He’d have no Kurama so no big chakra reserves so he might not be able to master SM to the extent he have now but he could have FTG in place of KCM/BM/BSM etc. and he’ll still have toad summoning and Rasengan but he’ll be far weaker than he is now.
Wrong, he would master sage mode faster, Kurama is altering Naruto's chakra control and didn't want the elder toad to help Naruto.
He would still have KCM/BM/BSM as he would still be the child of the prophecy.