still tanzo is one of worst fighterz in naroto menga imo...
Eh, I don't think Danzo was a poor fighter - he just got robbed because obviously he wasn't ever going to be allowed to win against Sasuke. But if you break down the fight, you'll notice that the only reason Sasuke was able to kill Danzo was because Sasuke had (at the time) extremely overpowered Mangekyou hax abilities. Something like 6 of the times Sasuke 'killed' Danzo it was actually just Susanoo being overpowered - and really, is anybody going to argue that Kakashi would do better against it? Susanoo is just really fast, strong, & hard to fight.
Like Sasuke's Susanoo arrow thing at the time was supposed to be so fast nobody had time to dodge it.
It's not exactly much of an anti-feat that Danzo couldn't dodge it when nobody else {at the time} could either.
But even without Mangekyou or Izanami, Danzo still managed to deflect it with Wood Release - albeit it took a lot out of him.
One instance was Danzo being tagged by Amaterasu while in the air - which Amaterasu is already hard enough to dodge, of course Danzo wasn't going to do it while mid-air. And you'll note that Sasuke never lands Amaterasu on Danzo again.
Two times Danzo *
intentionally* traded blows for what should have been winning attacks but both times Sasuke pulled through with the power of plot armor. But in a vs-debate against another character a strategy like that is probably going to work. Kakashi isn't going to be able to break out of the paralysis seal just by getting more emo all of the sudden like Sasuke did.
There was only really one instance of Danzo dying a 'silly' death against shuriken - but this takes place offscreen, and is meant to be in the middle of Sasuke forcing a bunch of reckless attacks to try and use up Danzo's Izanagi. But again, against somebody that *can't* whip out Susanoo at any moment, Danzo is going to have a much easier time and won't be pushed so far.
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TLDR: Danzo is still a Kage-level fighter with 10 lives and the ability to win with a single touch through his seals.
There aren't very many shinobi that can kill a Kage 10 times without being tagged even once.
Add in Danzo being able to actually use his Sharingan for increased combat ability + his Baku summon?
I think he can take Kakashi, although take that with a grain of salt since I haven't watched much Boruto.