that was a WACK episode, I do agree.
But lets not forget these are fillers, so we shouldn't be so hard on it... tho kakashi is jounin level and he has trouble with some sort of copy ninja. and that ninja said they were wandering and while wandering learning new jutsu's.. But how the hell can some of those darn strong ninja's wander around every where and no1 has heard of them... kinda strange..