Despite being the lowest of the Upper Ranks, Gyutaro showed much of his demonic prowess by making Tengen lose his left arm and his left eye in battle. However, Giyu would have been a better opponent for the demon and could have defeated him without losing any limbs.
So to cut a long story short, Kyojuro Rengoku is more powerful than Tengen Uzui. Among the Demon Slayer Corps, Kyojuro was acclaimed as a skilled combatant who was always dedicated to fulfilling his duty as a Hashira. Tengen admires and respects Kyojuro for his dedication to protecting human lives.
As a result, Tengen Uzui has to deal with the moniker of being the least powerful Hashira around. Of course, that's not the worst thing in the world, as all Hashira are strong. He's still incredibly powerful and can give any demon a run for their money.
With all said and done, Tengen Uzui is one of the strongest and most extremely skilled Demon slayer in the series, his physical abilities, combat skills and strategic thinking makes him a tough opponent to defeat in a battle.
Tsutako Tomioka, The Left Half
The day before her wedding, in an act of selflessness and love for her brother, Tsutako hid a young Tomioka while demons attacked and killed her. She protected him and guaranteed a future for him through her actions.
When Giyu later hears about Shinobu's death, he suddenly recalls her smiling face while being visibly shocked and upset by the news. This contrasts to his reaction to death of his other fellow Demon Slayers such as Kyojuro Rengoku, Muichiro Tokito and Genya Shinazugawa, whom he didn't react to as emotionally.
Giyu would still instruct Tanjiro to train to become a Demon Slayer with Urokodaki. As there is no Nezuko, Tanjiro would have no reason to pity demons, and he'll be much more harsh that he would be if Nezuko was alive.
But, comparing the two characters in their best forms, Zenitsu might be just a tad bit faster owing to his Godspeed move.
Rengoku's fight in the Mugen Train arc showed his incredible speed and reflexes. He was able to match Akaza's speed, and his movements were so fast that it was almost impossible for the naked eye to keep up. Tengen, meanwhile, is the fastest runner out of all the Hashira.
He is the fastest Hashira, and the second physically strongest. Obviously, then, Tengen Uzui is rather proud. He is demanding, fussy, boastful, and prone to selfishness. But he is also ultimately kind and caring, with great love for his three wives as well as the other Hashira.
1. Gyomei Himejima. Gyomei Himejima, the Stone Hashira, is the strongest Hashira in the Demon Slayer corps in terms of strength and swordsmanship. He is the only person who uses spiked flails and an axe instead of standard swords to kill demons.
Least Favorite: Obanai- he had so much potential, but he was barley used and most of that potential was wasted. The sad backstory wasn't able to redeem him for me, it felt kinda forced to make people like him.
He would be disoriented by the shockwaves created by Akaza's blows. Tengen has anti-demon bombs that can disorient them for a short period of time, but this wouldn't be an effective strategy when Akaza uses Compass Needle, which allows him to accurately pinpoint and aim for his opponent's weak spots.
2) Tengen Uzui
Rengoku was able to hold off an Upper Moon 3 Akaza and even managed to get him desperate towards the end. Every aspect of Rengoku's combat abilities seem to be better than Tengen's. However, he would put up a good fight as it will not be an easy victory for Rengoku.
The Upper Moon 6, a cruel demoness named Daki, may have lost to Tanjiro and Tengen in the end, but she could defeat a wide variety of heroes from other anime if they tried to slay her.
7) Obanai Iguro
Many fans argue that he is faster than many of his peers because of his battle against Muzan. Despite being wholly blinded, he could go toe-to-toe against the Demon King. If he had perfect vision, Obanai would have been even faster. His technique focuses on twisting and bending the sword like a serpent.
Gyomei can defeat Akaza without even awakening his Demon Slayer mark. Akaza is too inferior in front of Gyomei.
Rengoku's Unwavering Will Was His Greatest Weakness
Since he believes it is his responsibility as someone strong to protect those weaker than him, he will make sure he does just that. Rengoku sees any mission through to the very end, even at the cost of his life.
Tanjiro isn't Faster Than Zenitsu, not at all. He is Strong but Slow. So, Zenitsu Will Probably Chop Him Down to bits before tanjiro even pulls out his sword properly. There ya go!
Hinokami Kagura, also known as Sun Breathing, is easily one of the strongest Breathing Styles in the series by a wide margin.
This feeling of survivor's guilt strikes again when he believes Tanjiro has died after the fight against Muzan. Giyu, while he sheds tears, admits how he is always the one who is saved.
In Demon Slayer episode 23, “Hashira Meeting,” one of the Hashiras, Sanemi Shinazugawa, hated demons so much he wanted to provoke Nezuko into attacking so he could kill her. He even stabbed her multiple time in front of her bound brother Tanjirou.