The Susanoo > Bijuu thing is stupid. At the very start of Naruto, Kyuubi was supposed to be able to create to create tsunami's with a flick of just one of his tails... surely that is equal to or greater than taking a top off a mountain?

On the Itachi thing, I think he will probably transfer the sword of Tosuka and Yata's mirror over to Sasuke now. Despite what Sasuke said, he knows Naruto will be able to turn Sasuke around and then when the real fight with Tobi happens Sasuke is going to need all the help he can get.