If you look back at the zabuza fight, when kakashi got serious, he owned zabuza. He owned zabuza the first time, and when he saw naruto letting kyubi go, he owned zabuza in 2 moves, getting slashed and summon no jutsu.

In the Itachi fight, kakashi only got hurt trying to save kurenai. Yeah i agree kakashi would have gotten owned and did get owned by itachi, but i think if he was going one on one against itachi he'd be able to last alittle longer than portrayed in the water fight.(also note that kakashi was the first person itachi faught, and kakashi had used a kage bunshin to repel the water strike of kisame).

Really, kakashi is on such a higher level than sasuke or naruto at this point. Really just ask this, do u think sasuke would be able to stand up to itachi even for the length of time kakashi did? the answer is NO.

Sasuke has never shown anywhere near the amount of forsight kakashi uses in a fight, and his greatest thing at the moment is using a fully developed sharingan.

I'm sorry folks, but kakashi's been using that for a while now. Plus all the different jutsus and summons he has, Theres no way kakashi can lose to sasuke.