Sorry it's to hard for me to even accept it! First of all, Danzo's wind technique alone didn't do all that damage against Sasuke's Susanoo! Baku was the main reason why Danzo's Wind Release: Vacuum Serial Waves was effective! The wind created such a force that it was able to create an opening. It wasn't that impressive, but it was able to penetrate it! Naruto's Rasenshuriken really won't be able to stand a chance against Sasuke's Lv4 Susanoo. Naruto has the techniques now in BM mode to handle Sasuke. However, KCM Naruto didn't have an impressive arsenal in comparison to BM Naruto. His rasengan was able to have more destructive power and his speed increased a lot in this mode. Also, Naruto was able to survive against powerful attacks thanks to the cloak. Still, KCM Naruto is inferior to Sasuke. The reason why Gaara's sand breached Madara's Susanoo was because of the lightweight technique. You also must understand that Sasuke has fought against Naruto's chakra arms and most of them even didn't catch Sasuke when Naruto lost control of the Fox's power.