What do you think about Kanki vs YTW !?
The reason for that is because Kanki's greatest strengths are either shared by YTW's forces or mitigated by them.
Kanki heavily relies on unorthodox tactics being used against orthodox opponents. Pity for him that the Mountain Army is exceedingly unorthodox itself.
Kanki's brutality won't work either. Best case scenario, the Mountain Tribals don't give a shit. Worst case scenario, it just pisses them off. Point is, it won't demoralise them since the Mountain Tribals themselves are absolutely batshit brutal. These are people who tear out the jugular of their opponents with their teeth. Kanki ain't scaring them.
Hell, he will need to be more concerned about his own men running away from the Mountain mad lads. Remember how Kanki's men ran away from Kochou's forces? How well would they have stood up against far more brutal opponents like the Quanrong in an equally dire situation? Lol.
Kanki relies a lot on mobility but the Mountain Army are just as mobile (if not more so) and are usually expert trackers to boot (e.g. the human bloodhounds that could sniff out a fucking trapdoor. Lol). The Mountain Army can also scatter just like Kanki's and reform somewhere else like they did against the Quanrong.
Mountain Tribals are also on average just way stronger than the average plains dweller in a fight. So he isn't beating them in a head on fight either, especially since Yotanwa has the better subordinates at hand.
I just don't see Kanki beating someone that shares his strengths and doesn't have any of the weaknesses that Kanki typically exploits in other armies.
See this thread for Yotanwa nuttiness. Lol.