I hadn't watched the dance competition earlier, watching it yesterday made me think that both the couples actually performed very well. MishBir had some serious chemistry going on and I really liked how they lip synced the song. Kuhu and Kunal's dance was quite the surprise element tho, I especially found that dandiya bit cute 
Honestly it wasn't quite fair to indicate that Kuhu and Kunal probably wouldn't have won had Mishti not deliberately lost, when actually both the couples performed well and it was quite a tight contest with different things working in favour of both the couples.
I can't help but say that Kaveri Priyam is honestly such a find. How convincingly did she depict the feeling of jealousy in the beginning of the song and how swiftly her expressions changed to adoration as soon as Kunal entered. I feel her strength as an actor really lies in the way she is able to convey so much even if the length of a scene isn't necessarily long.