Here are some some details and pictures from the games' official manuals.
Mikado and her Shainto counterpart Kaun face off.
The manual pairs her with Jo as speed-type. The stats the ladies have are similar with the four swords, but the polearms are a different story. The Shainto spear is Jo's worst weapon, but the Narukagami naginata is Mikado's best. Mikado and Kaun have the maximum speed and power with the big pointy sticks!
Mikado's stats with each weapon, if you're curious are:
Weapon-----Power----Speed
Naginata----22/22----15/15 Same as Kaun with Yari (Jo is 15 and 12)
Broadsword-15/22-----12/15 Same as Jo
Katana-------12/22-----14/15 Slower than Jo
Nodachi-----15/22-----13/15 Much weaker than Jo (18)
Longsword--10/22----14/15 Slower than Jo (Tied for the weakest Char/Weapon combo in the game.)
Notes: The lowest normal power is 10 and speed is 12. NPCs and the secret duo are above the limit. Mikado is weaker and slower than Kaun with all swords except being as fast with the katana.
In the original game, Mikado and Black Lotus (aka Kokuren, aka James, aka Highwayman) are the medium characters. Sadly, I haven't found the character stats in BB1 yet.
Also, that codename: Gate of the God's Descent. That's even cooler than my nickname for her: the Empress.
Mikado and Tatsumi face off, back when she was balance and he was speed.
These scans came from Archive.org, so that's why the text is scrunched like that.