Naruto with out the nine tails

[Sennin of Logic]

No, no, no! Actually, quite the contrary: i am pretty confident in the validaty of my previous statement! Would you, perhaps, like to follow up your witty response with...ahh...another insightful comment?

Sage mode is extremely powerful and it's enhanced ninjutsu and taijutsu would solo any living ninja from the leaf after the war. Plus, due to sensing, no one could sneak up with him. Naruto would also have KCM even without Kurama since it's now Naruto's chakra and isn't kept with Kurama.

If Naruto's skills are crap, everyone else alive are diarrhea.