So what you're saying is that our boy Akou was exchanging blows with someone barely weaker than Renpa?
Yep. Akou is a straight badass.
And not just Akou, I guarantee Moubu’s top generals (like Raiki) will also be that strong martially. We already know Moubu’s standard soldiers are on par with Zenou clansmen:
So Moubu’s generals themselves are probably monstrous warriors given that the entire theme of the Moubu army is martial/offensive strength lol.
If Ousen, who’s focus as a Great General is on tactics and strategy, can still find a Renpa tier commander who also himself knows and can use some of Ousen’s own tactics, the idea that Moubu has commanders beneath him who are Akou level in martial strength should be a given.