I think the people who are shocked and annoyed by how much difficulty Jurota is having, despite being Kuroki level, are forgetting just how monstrously durable Meguro was.
It took several blows, a destroyed eye, a completely destroyed inner-ear canal, crushed testicles, a broken arm, broken fingers, a massive kick to the back of his nape, a punctured windpipe, a broken neck, and a stab to the brain to fully kill him... and even then, he wasn't really even wearing down until the last three blows.
So far, Jurota really hasn't done anything to make me doubt how strong he is. It's not like he can stab Hayami like Kuroki could, and I'm pretty sure just about any other Kengan fighter would've been K.O.'d by now from taking this much damage. But if Hayami's even half as durable as Megumi, then it's really no wonder that he's not even slowing down yet, if anything he's getting even more fired up while Jurota will begin to tire out. His resistance and pleasure to pain makes him a freak of nature and extremely hard to put down for good.
This also isn't Kengan rules: Jurota can't kill Hayami without taking an L, and considering that Megumi was one of—if not the only opponent that had to be killed to be taken down, then... yeah.