Quote Originally Posted by Prime32 View Post
When their opponents are also ninjas, how does that count against them? Plus we've seen clearly superhuman guys like White Zetsu (who can trap people in goo, pass through earth like air and drain life force) getting killed by the thousands with little effort. Itachi wiped out an elite clan by himself in one night. Other times we see people getting defeated easily but left alive.

He killed a bunch of Sound ninjas very quickly, but after that he became less crazy and appeared less often.
I'll just focus on that as most of the rest I don't really know enough about (I didn't watch a lot of Naruto and it was a long time ago)

As far as I know the ninjas are otherwise ordinary humans who can use techniques to enhance their abilities. Very few of them are actually stated to be more resiliant to damage then any other human.