So Theresia Wincons is she comes in close combat, and defeats Kakashi using her swordskill.
Kakashi wincons is like, everthing else you can imagine Kakashi can do.
They start 4km, and both of them have Kilometers range attacks. Not sure what are Kakashi range attacks, so i skip this for now.
Anyway, first wincon for Kakashi. Because is SBA, they are in new york, and Kakashi can just steath mastery, and kill Theresia before she noticed. Kakashi can sneak up on people that can notice presences, so he have chances here to do so.
If she noticed Kakashi and block his attacks, they would fight in close combat. Kakashi have 3x ap advantage, so he have a advantage in this regard. He also way more versatile.
He can
spams clones to gang up on Theresia, he can use his paralysis jutsu to land hits on Theresia, he can use his Sharigan to cast her in a Genjustu (The more likely scenario), he can take her sword out of her hands due to Lifting Strengt difference,
he can summon his dogs to pin her down, he can One-Shot with Raikiri, he can use his Substituation jutsu to avoid all Theresia attacks, he can use his Sharigan to predict all Theresia moves and her resistance not gonna help at all due to being way inferior to Sharigan, he can use his Earth jutsu to either create walls to block attacks or to pin Theresia on the ground, he can use his lighting techineques to cause paralysis demage.
Honestly, this is probally a stomp, if Theresia only wincon is maybe outskilling Kakashi, but he not only have ways to avoid that complety, he also very skilled in close combat.