Here is another comparison of these ultra expensive blades. King C. Gillette PPI (Russia) vs. China (Gillette Shanghai). On the left is the Russian pack manufactured 02/21. On the right - the Chinese, manufactured 03/23. The Russian blades are laser etched, the Chinese have black printing on the blade.
Same methodology of comparison as always. Both (brand new) blades with the same razor, brush, cream, aftershave. One shave each. I even try to have the same water temperature for maxium objectivity. 3-pass shaves with (in this case) Ming Shi 2000S @6.
Even though these blade don't have big differences, they still shave differently. Many users will not probably find them different. The Russian blade has some ever so small degree of roughness both WTG and ATG. I also think it is a hair sharper than the Chinese blade. My afternoon checks show the shave with the Chinese blade wasn't exactly as close, as half of my face has some stubble that could be easily felt with my fingers. Which confirms the Russian is sharper. The aftershave response was stronger with the Russian blade. The Shanghai blade feels smoother on the skin. Even though I will not buy any more King C. Gillette blades, my nod is towards the Chinese one.
P.S. As this has happenned more than once already, please stay on topic. Let us not discuss other blades here or interject "Blade X is better than both KCG, etc." Thank You!