When SLN was in trouble, YG had to face all the Mongolian Warriors including the GWM. He handily defeated everyone with one move of his heavy sword, except for GWM. Had YG not be restricted to holding SLN and fighting. How would a fight between YG and GWM play out? Who would win?
My take on this is YG would single-handily defeat GWM. If GWM had trouble with YG while he isnt allow to move around. Imagine YG moving freely to untilize the full power of the Heavy Sword. This is also a testament to how great Dugu is.