Board Thread:Versus Debates/@comment-24824859-20160311233859/@comment-26369387-20160316202935

^Because Madara was using armoured Susanoo, when he shrouded it around Kurama, just like Sasuke was using humanoid Susanoo with Kurama. It is possible that both Susanoo reacted to Kurama's chakra, which enhances ninjutsu(which Susanoo is), making it appear like PS and making it about as strong as it.