Interesting response.Pein would win 8 out of 10 times....
This is very true... people do not take this into account. Itachi with intel will smash, Itachi without gets smashed.Itachi is much more analytical than Naruto. He would've found a way to beat them.
His intellect is often not taken into account.
Kakashi figured it out on his own and they're on par when it comes to intellect.
This is the most plausible answerNo intel: Pain 8 times outta 10
With intel: Pain 6 times outta 10