Yeah, I think the last link you have there, SC01 is an actual printed label, further distorted by the digital process. Even if you do an image search on the Tamiya colour, you get at least two different grays for the same bottle of paint. That said, the Tamiya swatch looks much closer to the Snyder & Short paint chip - quite dark and very noticeable blue tint to it.
Interesting note, they did a second chip set with two more Kure samples. Too bad though, the thumbnail link on their site is broken, so it can't be viewed. There is this pdf paint list for Vallejo ship colours, and it mentions two options for Kure, and one of which is without the blue tint.
So bottom line, when you factor in scale and weather effects, there are a number of possible outcomes.
regards,
Jack