A/N: Fairy Tail's Fire Dragon Slayer vs Konoha's Nine-Tails Jinchuriki.
Okay, let's list down the facts.
Naruto's advantages and disadvantages
+ At his strongest is probably Small Planet to Moon Level+ Much wider arsenal and forms
+ Can use his shadow clones to attack multiple or a single person at once
+ Can move faster than lightning and reacts at lightspeed
+ Has Kurama to help him
+ Nine Tails Chakra is not fire, thus Natsu cannot eat as it could poison him
+ He has fought planet and moon busters like Kaguya and Toneri
- Chakra has limits
- Natsu's keen senses can help him distinguish the real Naruto from the fakes
Natsu's advantages and disadvantages
+ At his strongest his probably Multi-Continent+Fire is more destructive
+ Dragon senses can mostly likely detect the real Naruto from the clones
+ More destructive attacks
- Slower
- Weaker
- Never fought someone on Kaguya or Toneri's power (The only closest to that is Acnologia, who is Multi-Continent as well)
- Cannot eat Tailed Beast Chakra
- Has a tendency to rush in without a strategy first
- Burns through his magic quickly
So for me, Naruto can win