Some of you are really downplaying Kurapika's victory. Yes, Emperor Time is very powerful but it's his ability, it's not as if the match was unfair.
Before the fight, Kurapika knew Uvo's Hatsu and Uvo was aware that he should avoid Chain Jail at all costs, even when he was kidnapped he had plenty of time to think about Kurapika abilities but even in the case he would have understood Kurapika is a Specialist I don't see how it could have affected the fight in a significant way. It's the same for Kurapika, it's easy to find out what is Uvo's ability.
They fought and Kurapika was significantly faster than him, he managed to damage Uvo with kicks a punches, endured his BBI. Kurapika provoked Uvo so he would use his full power but Uvo was already trapped by Chain Jail. Kurapika is a better fighter than Uvo overall, despite Uvo being a veteran fighter. Emperor Time is very powerful but who can blame him? It's his ability, Uvo won against the Shadow Beasts thanks to his BBI, it's the same thing.
EDIT: Now about Uvo VS Razor
I already said it before but those kind of matchups are one of the reason i really want to see a fight between a strong Enhancer and a strong Emitter. I must say among all the 5 regular categories, I think Emission is at the best place: They are better and stronger at long range while being able to use Enhancement, the strongest category for offense and defense at 80% and Manipulation, who permits them to control their attacks at 80% as well. From what we have seen, Enhancers rely on CQC, it means the distance is very important in those kind of fights. During the GI boxing game, Gon's teammate won the guy with the Warp Punch by CQC, but it worked because that guy was weak.
Razor is physically strong, has a strong aura, Nen balls, and the 14 Devils. Uvo's attacks are without a doubt stronger than Razor but Razor can hit him with his Devils, he is also able to make them disappear and combine them, Uvo is durable but the 14 Devils hit will hurt him for sure, their categories are near, the Devils are Nen creatures. To win, Uvo would need to safely use BBI without being touched by Razor's Devils. It's very hard and I don't think a full BBI could beat him(again, because of their categories and if he uses BBI at full power the rest of his body would be vulnerable, Razor is able to create a Devil and injure him significantly, like during the fight between Feitan and Zazan,who is not even an Emitter) at least Razor has no healing abilities like Kurapika. I hardly see Uvo winning against him.