Well this Wolf Fang is Kiba's version of his suicide attack. He uses up all of his chakra, so he will be pretty much unguarded after this. His only shot is if by luck he wedges Sakon-Akon against the canyon wall and drills them good.

Sakon shrugged off the Lion Rendan pretty easily, that was only at his base level. Sure this Wolf Fang is a lot more powerful, but so is Sakon in level 2. I think this fight will go on for another chapter, maybe end in 204.