No. The two genes act very similarly--both produce pewters when combined with pastels, and both supers are solid, dark-colored animals with white bellies. And they are allelic, in that they are located on the same gene--so an animal can only have a max of two cinnamon genes, or two black pastel genes, or one of either. And a super will always and only pass on one copy of one of the genes to its offspring
But the black pastels produce overall darker morphs. The super black pastels are more charcoal black, while super cinnamons have a somewhat warmer brown coloration. Black pewters look very different (darker) from cinnamon pewters. I think if you poke around you can find similar trends with lesser and mojave and hypo mixes.
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