1. Naruto (if he becomes Hokage
2. Hashirama
3. Tobirama
4. Hiruzen
5. Minato/Tsunade (both aren't good all around fighters, But one is a good front line fighter, the other is unmatched in medical ninjutsu)
I don't want any arguments against me , since this is my prediction. Just make your predictions.
First off I want to remind you that Hashirama can absorb Bijuu chakra with his wooden dragon Jutsu. Thus Kurama's chakra is kind of mute. And since that is Naruto's Ace card I dont see him beating Hashirama. The Guys jutsu are on a whole different level when compared to Naruto.
1) Hashirama
2) Tobirama
3) Naruto (If he becomes Hokage)
4) Minato
5) Hiruzen *In his prime I would put him at #2 moving everyone down 1 spot, as he is now I have him at 5th, which isnt too shabby for a 70+ year old.*
I put Tobirama above Naruto just because I believe his Jutsu is on par with Hashirama. I think Tobirama could have won a fight with Kurama, if Naruto and Tobirama fought each other it would be a close fight, maybe even a coinflip, but I have to put Tobirama above him just for the fact that he invented both the Edo Tensie and Hiraishin, which are 2 of the strongest techniques we have ever seen, who else knows what he has stored away. I bet he invented Bringer of Eternal Darkness Jutsu as well.