'Far superior blade' --> based on what? Susanoo arrow would be more than enough for mokuryu . It had enough lethality that kabuto dodged it instead of tanking , despite the enormous durability high up he got because of water liquidification , sage mode and jugo natural energy absorption which converts to almost limitless stamina and in short like kisame heal himself from all injuries . So if Susanoo arrow was that much of an attack even for him , then mokuryu gets demolished as easily as it comes out . Sasuke uses genjutsu which captured danzo with ten sharingans + shisui eye to recognize and break out , which he couldnt even accomplush the former , so that one-shots hashirama . Sasuke Susanoo blade cuts down mokuton trees and pierces through hotei , which hasnt shown catching anything of that speed . Which slashed juubito .
