Actually...I'm quite very serious. I believe they can defeat him because they are strong and infinitely smarter than Naruto. Think about this....when the Tree was attacking ppl Naruto was not skilled enough to avoid. Nao...think Madara and Hashirama were able to hold an entire conversation not looking at the Tree and dodge. Tobirama, and Hiruzen didn't get surprised. That's the difference in their skills Imho. Besides Itachi is in ppl top 10 and we have never actually seen him try....imagine him actually having the urge to win, or kill at all costs. This is my opinion, but I stand by it...I feel raw power is not the be all, end all. XD