Kaneki was fought by the dying Arima, who had only a short time to live. He was almost blind and relied only on his hearing. And even so, he managed to reflect absolutely all the attacks of the enemy and repeatedly blitz him. Arima didn't want to kill Kaneki, so Kaneki won. And if you think that One-Eyed King is stronger than Black Ripper, then it's just ridiculous, because the only thing that's changed in Ken is the thirst to live.
And you are very much underestimating Yoshimura. The battle with him was the most difficult and large-scale in the history of the CCG. The best investigators gathered to exhaust him and put everything on a finishing attack by Hoji. It came when they were all standing with their backs to it and were wildly exhausted. At the same time, Kori was able to Dodge the attack and fight for a while. Yes, he is certainly a very cool investigator, but it's not enough to hold out for so long against the top-tier verse. All the power of Eto lies in its regen and massive kakuja. By itself, it does not know how to fight and is a live tank, while Yoshimura owned a master defense and easily repelled the attacks of 5 investigators, 2 of whom were in Arata. Come battle Eto and Yoshimura with their typical morals and Eto wspolne could lose.
About Amon and Takizawa. Both have a colossal level of RC cells, which is several times higher than the level of Sasaki's RC cells, which defeated Eto. But this is not the main scaling. The bottom line is that Kaneki turned Eto's kakuju into a bunch of scraps with a single attack. This same Kaneki considered Amon's kakuju a problem and said that he could not break it. He might have been able to do it in a grueling battle, but it would have delayed the fight. But Seido was able to cope with this armor without problems.
As for Urie, it is stronger than Roma and Rio, which are high-ranking gulls, well controls its kagune and has good Regenerationn. His defense and skills will put him in the top 10.
