Epic cat fight
Edit update for pics.
Mui wins, I don't recall cammy showing anything that impressive.
Mui was a diciple class to begin with, she was already dodging modified machine gun bullets back when kenichi was still fighting the 8 fists. She barley got any power up back then. At the end of the series she was at border master class, she nearly brought down a palace , casually destroying solid pillars and walls using her dou power. Add in her bullet proof armor & own durability she should win by stats alone.