Gyou’Un has Weight and is a more skilled warrior. Zenou is physically stronger (I doubt even Kanmei or Moubu are as strong as Zenou just on pure raw strenght) and his resilience is absolutely nuts. He is a freak of nature, pure savagery incarnated.
I give it to Gyou’Un. His skill and the magic behind the glorious Weight of a General shall bring victory to the last of Rinshoujo's Ten Heroes. Still, he needs to be extremely careful and it's not really unrealistic for Zenou to pull off a W.