I know this has been discussed quite a bit in the last week, and i agree with most - you just can't stop those itachi fan boys. Some even have the nerve to say that Itachi can even defeat Minato? What logic or evidence is their to prove that Itachi can stop Madara and the Kyuubi in one fight? And who says Itachi can stand a chance against Kyuubi? He might be able to control it for a few mins, but he does not have EMS. His Sharingan would slowly fade away and the kyuubi would eventually crush him. And as for Nagato, keep in mind it was three vs one, and Nagato was being controlled and focused on capturing NARUTO. if itachi was alone he would have been done by Edo tensei, which couldn't have been stopped by itachi alone, it took two of the strongest jinchuruki to aid him to stop it.