Kurama's Power Is a Result of Plot Armor Similarly, Kurama being inside Naruto gives him the advantage of being sheltered by plot armor, in turn making him the strongest beast. Kishimoto also had to make Nine-Tails the strongest since only half of it was sealed inside Naruto.
Kurama, also known as the Nine-Tailed Fox, is considered to be the strongest of the tailed beasts in the Naruto series.
Kurama is the strongest of all the Tailed Beasts and the iconic partner of Naruto Uzumaki. However, other than Naruto, Kurama also had other Jinchuriki. Kurama was formerly sealed in mito Uzumaki and, Kushina Uzumaki after her.
1 Naruto Uzumaki
Naruto is the strongest known human in the entire series. Being the perfect Jinchūriki of Kurama, he's already head and shoulders above every Tailed Beast in terms of power. He also has the chakra of all the other Tailed Beasts, making him incredibly powerful.
Kurama in Naruto stated that no matter what it throws, it will not be able to defeat the Ten-Tailed Beast. The difference in power levels is far too high, which is why the Ten-Tailed Beast is stronger than Kurama in the Naruto series.
Does Kurama get revived in Boruto? No, sadly, he won't come back. Tailed Beasts are basically made of chakra, so when they're killed, they return to chakra and will be revived soon. However, Baryon mode consumes Kurama's chakra until he die, so there's no chakra left in him, that means he can't be revived anymore.
Madara also went on to call Might Guy the strongest fighter that he ever faced. All of this happened when Madara was a ten tail Jinchuriki and not in his base form. Given Might Guy's power levels after opening all the Gates, he would be able to beat Kurama.
To the fandom it seems that, although it would be extremely difficult, it is not impossible, and at worst the fight might result in a draw. The reason for that is, even without Kurama, Naruto still retains his Sage of Six Paths mode and his own Sage Mode that he mastered through training.
The Zero Tails is the only type of tailed beast that was not created by the Sage of the Six Paths, Hagoromo Ōtsutsuki, alongside the other tailed beasts. However, in the film, the nine-tails, Kurama, reacted negatively upon its appearance implying that he has a past experience with the Zero Tails.
Without Kurama, Naruto lost a big part of what defined his strength, and what also made him who he really is.
Because Tailed Beasts are life-forms made of pure chakra, they are eventually reborn after dying. They will always come back, but until that happens, they're factually dead. So, deliberately creating some new Tailed-beasts to get Kurama back does not seem like something Naruto would do.
At best, Sasuke might be slightly stronger than Naruto without Kurama. However, in the worst case scenario, he might be substantially weaker than the Seventh Hokage. A fair comparison can only be made once both these characters display their true strength after the loss of Kurama and Rinnegan in the Boruto series.
Naruto has always been a powerful character, but his possibility of obtaining a new-tailed beast after Kurama's death could make him stronger. The increased power from the new-tailed beast could surpass even Baryon Mode, making Naruto a force to be reckoned with.
Obito Uchiha was one of the strongest known Uchiha Clan members to ever live and during the Fourth Great Ninja War, he managed to achieve the powers of the Ten Tails. Becoming the first Ten-tails Jinchūriki since Hagoromo Otsutsuki, Obito gained powers greater than that of the beast itself.
Kōjin (コージン, Kōjin) more commonly known as the Eleven-Tails (ジューイチビ, Jū-ichibi) is the only known artificial tailed beast in the ninja world.
The Ten-Tailed Beast commonly known as Ten-Tails, is a major antagonist from the Naruto manga and anime franchise. It is a titanic, nightmarish, demonic deity of unfathomable power who laid ruin over the world in the beginning of time.
It turns out the Tailed Beasts never actually die, but they reincarnate over the years. The first instance of a Tailed Beast dying happened with Isobu. The monster was killed alongside his host, and it forced the beast to reform over the years.
Kurama is the Nine-Tails who resides inside of Naruto. One of the reasons why everyone feared Kurama was not only because he destroyed the Hidden Leaf Village, but because he is the strongest of all Tailed Beastsーnext to the Ten-Tails.
The amount of tails on a tailed beast shows the amount of chakra and power that the beast has so that means the weakest tailed beast is the 1 tails shukaku, and the strongest is the 9 tails kurama.
Although Naruto usually uses the Six Paths' Sage Mode along with the Kurama Chakra Mode, there is no reason he cannot use it without Kurama's strength. In fact, Naruto can still use the basic Sage Mode, which is enough for him to take down a roster of enemies.
This ability of his only strengthened over time and by the end of Naruto, he could easily heal from most injuries without much trouble. Without Kurama, Naruto can no longer risk taking heavy damage in battle as he won't recover like before.
Being the reincarnation of Asura Otsutsuki, Naruto was offered half the power of the Sage, while Sasuke was given the other half. Upon returning to consciousness, Naruto had gained the incredible ability of the Six Paths Sage Mode.
While Naruto has lost Kurama, he should still hold the chakra of all the other Tailed Beasts within him. In that case, he should be able to access this tremendously powerful form. While it certainly isn't as strong as his former powers, it would still aid him greatly in battle.
Kurama shedding tears for the Sage. Despite his malice towards humans, Kurama made two exceptions with the first being the Sage of the Six Paths whose final words to him and the other Tailed Beasts brought him to tears.
To sum it up, in the final developmental stage of a Susanoo, the Perfect Susanoo is stronger than Kurama on its own. However, that does not make it stronger than Kurama in every situation because the Tailed Beast can enhance the jinchuriki's abilities and turn the tables in a battle.