Now lets look at the harder to judge one.
Kuro vs. Mutsuki
This once again depends if Mutsuki has Kuro's data. If not, Kuro wins by a landslide. If yes, Mutsuki will manage to minimize point loss but I doubt she'll win against Kuro much. Its a toss up if they manage to figure out Kuro's playstyle, but I'll give Kuro the advantage even then.
Yuu vs. Kaori
Well, this match depends on luck more than usual. If Kaori did not make any accidental yakuman then Yuu wins. If Kaori's beginner luck activates, Kaori wins.
Ako vs. Kanbara
Kanbara is actually a good solid player. But, I'll give Ako the advantage on this one cause she might be able to blitz Kanbara.
Arata vs. Momo
Oh this one is easy. Momo's stealth mode is godly and she has a solid play besides. Momo advantage easily.
Shizuno vs. Yumi
Sigh... unfortunately for you Shizuno. I think Yumi's playstyle is more solid than yours and Yumi's tactics are great if she is in a pinch situation. Yumi advantage.
I think a Achiga vs. Tsuruga depends on some things.
= If Kuro will be able to get a nice lead on the vanguard match.
= If Kaori's beginner luck activates.
Achiga wins if they are able to get a sizable lead on the vanguard match like they did on Bansei. If this happens they have a good chance of beating Tsuruga even with Momo and Yumi if they play defensively and cheaply.
If Achiga did not get a sizable lead on the vanguard match or even if they did, Kaori somehow got a yakuman hand in the lieutenant match. They're screwed when it comes to the vice-captain and captain matches.
Achiga vs. Tsuruga is more or less even. But, if I have to choose its Tsuruga.
I think in 10 matches with each other Tsuruga will win an average of 7 times to Achiga's 3 times. Especially since the more match they play, Kuro's weakspot could easily be spotted.