yea it has been doneKamui can of course kill someone if it hits but to use it as the reason why Kakashi would win any fight is a flawed way of saying he can beat someone in a one on one. In theory yes but it should not be the basis for saying he wins. It's the same as saying Kunai to the face could win.
I dunno what to think about the 1000 Jutsu thing, he was meant to go on a rampage but then we saw jack-sh**.
About LaddyGagga: I can't be bothered with people who post the sort of crap that douche posted. Comment to say you're not commenting? LOL
Actually some people have said Kakashi can beat Itachi, but I don't really mean to just target those people.
I of course agree that Kamui to the head would kill but at the same time the same should be true for getting a Kunai to the face-although it would kill, it's not likely to land and has yet to be done.
via Minato in the 3rd great ninja war
but i understand what you mean, what are the chances of somone allowing that to happen