Hi Bro, that's is a good valid question.
Firstly, the RSS is an encrysting monti, whereas CP tends to plate out.
RSS has a much dense polyp density, each polyp stays very near to each other, while CP has a much wider seperation between the polyps.
From astetic point of view, the RSS from far tend to appear as more redish overall (due to it's denser red polyp) while CP appears to be more greenish as a whole due to it's more scattered red polyps. It we place this two SPS side by side, the contrast will be pretty obvious .
Just my humble observations