ok first off this thread is stupid, we are talking about two different shows and that leaves a lot of what ifs.
also you asked if genjutsu would effect them, you cant go up and break genjutsu up whether it be genjutsu through sharingan, hand seals, sound or a movement of a finger its still genjutsu. speed has nothing to due with genjutsus affect mainly because dbz characters wouldnt know wat the hell was going on. its going to work because all dbz characters do is punch and shoot energy out of their hands,they have no way of breaking free.
also do the words izanami,izanagi, tsukoyomi or kotoamatsukami mean anything to you, how are they going to break free from them seeing as how they dont require hand seals( also not to mention that naruto characters can weave hand seals incredibely fast and dbz characters wouldnt know what they were doing). ki and chakra are the same thing you people need to under stand that. im not saying that naruto verse would win in a fight, im answering the thread that yes genjutsu can and would work,but once again this thread is stupid because it would NEVER happen