You only have to take a closer look at the experiences of the two people, and you will find that Kishimoto has been balancing the strength of the two people, and does not want the audience to feel that who is powerful and who is weak. In the early stage, Spiral Pill was against Chidori, and then Naruto had a shadow clone, Sasuke had Howe Fireball, Naruto had Nine-Tails, and Sasuke made a spell mark! In the middle of Naruto's study of the wind and the spiral shuriken (nature change), Sasuke himself also realized the change in the nature of Chidori.
Naruto learns the immortal mode, and then beats Payne to fully control the Nine-Tails, and the two pillars kill Itachi alone, the spell mark is gone, and he gets the eternal kaleidoscope and drives the Gundam. (Not to mention releasing water, Payne made himself half-dead with a ground-blasting star, and also let Naruto control the Nine-Tails, and became the hero of the whole village without nonsense, he is a great man) and then to the back, Naruto got the Chakra of the Eight-Tails, but Sasuke's own Eagle team can also help recover blood and carry the damage. And then in the end, it's the reincarnation of the spinning top, needless to say.
The whole comic Kishimoto has been balancing.,I just don't want you to think that one of them is weak.,As a result, a lot of people look like yy.,I'm really disgusted to watch! If you've watched the Hokage, you'll know that without the Nine-Tails Naruto, the first episode hangs up, and the whole book ends. In the first episode, Naruto relied on the Nine-Tails to survive, and he didn't fight again, relying on Kakashi and Sasuke, cultivating the Wind Escape Spiral Shuriken, relying on Kakashi Yamato's help and the Nine-Tails Chakra, cultivating the immortal mode, relying on the equipment dropped after the teacher's death, and beating Payne.
Relying on the nine-tails plus parents, mastering the nine-tailed chakra, relying on the 8-tails plus, all the way open. What about Sasuke? He is also the only brother whose parents are dead, and he is his enemy, risking his occupied body (it's a bit strange to say that) to find Orochimaru to gain power, and learn the nature change by himself (even Orochimaru doesn't know) to form the Eagle Squad by himself. In addition to helping him remove the curse mark and give him a pair of eyes, who else helped him?
Narusa's fight began thousands of years ago, and there is still no winner or loser. Indra, Asura, the brother's talent in two rounds of fighting, is obviously better than Indra, and Asura has thicker blood and is more resistant to beating; So the two of them are endless, and their heirs have basically inherited this; Uchiha and Senju have also fought for n years as mortal enemies, and each of them will give birth to a peerless master, but there is still no winner or loser, it can be seen that the strength of Indra's Asura turned people should also have won and lost each other, at least they can't destroy each other, otherwise there is a black absolute on the side to instigate this fight would have ended a long time ago.
However, it wasn't until Senju Tsuruma and Madara Uchiha's generation that the two sides decided the winner; Both sides should be the strongest inheritors in history, and may even surpass their ancestor Indra Asura, and a big reason why the pillars can break the game is because of Mu Dun; We know that the power of Mu Dun that can suppress the tailed beast is from the Divine Tree, which is a power that Asura and even the Six Paths themselves have not obtained (I personally guess that Ten Have** is a ghost of the Black Absolute Demon).
Relying on this hand, the heir of Asura finally overpowered the heir of Indra, forcing Banban to also look for an external force, that is, the Nine-Tails, to help; It's a pity that he doesn't know that Mu Dun Tianke Tailed Beast, and the nine-tailed beast is also in vain; The Valley of the End was still defeated (in fact, it was a tie, and the two were counted as both of them, and they ended up happily), and the death of the two also indirectly led to the defeat of the Uchiha and Senju.
From the above, it can be fully explained that both sides are promoting each other and achieving each other; Without the help of external forces, there is a high probability that the two sides will be tied, and even if one side is temporarily ahead, the other side will quickly catch up; After all, the background is too deep, and the upper limit of strength is very close, so you only need to tap your own strength to continue to grow.
Until an accident happened, the heir of Asura unexpectedly became a human pillar force, which instead suppressed Naruto from exerting the talent he should have and became the tail of the crane (Watergate: blame me); This also led to Naruto being beaten by Sasuke since he was a child. And once Naruto exerted the power of the Nine-Tails, this situation was reversed, and then the two sides opened each other, one opened the Nine-Tails and the other opened the curse seal;
However, this is not the true level of both sides; However, even so, Naruto has always been beaten since he was a child, so the existence of the Nine-Tails has always been a burden to Naruto; In the early stage, because of the interference of the Nine-Tails, he became a crane tail, and even the pills had to rely on a clone, and even if he fully mastered the power of the Nine-Tails in the later stage, Naruto relied too much on the Nine-Tails, and did not fully exert his own talents, and the Immortal Mode had to be charged for a period of time; It's too far worse than what the shouting between the pillars is, and the second opening immortal mode.
In the end, it can be concluded that without the Nine-Tails, Naruto has a high probability of a draw for a lifetime. With the Nine-Tails, Naruto was beaten badly since he was a child.
In the final battle of the Valley of the End, I personally feel that Sasuke still has a chance to win, Naruto's six powers are disposable, and the Daoyu uses one less one, but Sasuke's reincarnation eye is a permanent copyright; After Sasuke absorbed the chakra of the tailed beast, if he didn't rush to use Indra's arrow, but slowly consumed Naruto's seeker jade, Naruto basically had no chance of winning.