The point you bring up is not confined to space imagery, the same considerations apply to earth-bound photography, for that matter, as true in the ancient days

The point you bring up is not confined to space imagery, the same considerations apply to earth-bound photography, for that matter, as true in the ancient days of film as today. Back then every photographer knew that various color films of the same type would render scenes differently. Every manufacturing process produces biases in results, the color-forming dyes at the core of color films responded in subtly distinguishable ways reflecting their explicitly unique chemical compositions. In the current digital era, vendors produce "image processing engines" that correspond to film chemistry and just as variable. Camera-makers advertise particular "color signatures" to help promote sales and brand loyalty. Relevantly, witness the endless discussion in photo "gear forums" over which rendition is the most "correct". Arguably we could say "all of the above", a case could be made one is as accurate as another since there is no single standard measurement of "accuracy". Bottom line is I wouldn't expect any given Hasselblad to produce two photos with the same color rendering when they're shot on different brands of film. Comparing the Apollo moon landscape with the Chinese digital images will inevitably show differences, but we couldn't really say which is closer to how it "really" looks.