Dude...it's the RAIKAGE.
: / He cut off his own arm because it was an inconvenience. I'd love to see Naruto pull it off.
And Sasuke's powers are getting more and more broken. : /
Ehh, while cutting off your own arm is pretty B.A, Raikage isnt that incredibly powerful. He beat a weakened and tired Sasuke, who if it wasnt for Madara/itachi and the rest of Hawk, would have died many, many times. Killerbee nearly killed sasuke twice in one battle.
Now granted Sasuke's Mangekyou abd his abilities are pretty strong, but Naruto has the Kyuubi under complete control now. And he's the Sage of 6 paths apparently. Kisame about crapped his pants after all Naruto did was crack his knuckles. And after Naruto hirashin'd his Butt. XD