I cannot do a performance test as I am keeping my one CG new for The Boy. As P-Easy noted they are different sizes. I took some side by side pics to show this. The shot of the spines is misleading as there is a shadow area on the CG that makes it looks thinner at first glance. I also mic'ed them. The Cg is 0.186" and the Le is 0.170" thick. The blade shapes and lengths are a small bit different, as is the width (height). Most noticeable to me is the difference in the heights of the flats of the saber grinds. Here are the pics: