@Abz88 definitely not the same blade. Platinum is less sharp and less smooth (although it felt a better than Blue logo Platinum but that might be due to the razor).
24h stubble. WTG+XTG.
I used the exact same equipment yesterday with KCG blade and the shave was better.
Next test will be the KCG blade in EJ316 to compare with Nacet, since this is my favourite combo.
Regarding cost: If a pack of 10 lasts me for one month (30 shaves give or take 1-2) they are still half the price of what I used to pay for carts. My problem is that I cannot source them locally and shipping is on the steep side, so Nacets are a clear winner in cost per blade (I get 3-4 shaves out of one).
I agree they are not the same blade. Still the KCGs are closer to the light blue (white logo) Platinums rather than the Dark Blues (blue logo). The KCGs are sharper but in my experience equally smooth.
I foresee a pack of 10 will last me 80-100 shaves. They are very longeve even if by shave n.7-8 they suddenly lose most of their sharpness still retaining all the smoothness. That is the same peculiar behavior of the light blue Platinums and maybe that's why someone think they are the same blade.
The KCGs are premium blades for sure.