Randy, with respect, that would make sense on the 1k sandpaper being more aggressive as it's closer to 600 grit if you convert the rating system to match the 1k Japanese rated stones but wet'ndri papers are pretty aggressive also as they are SiC based. I think the Sigma Power stones are SiC stones. I haven't used them but I'd bet they're fast. Maybe one of the knife or tool guys can confirm.

Back to 'marriage' I find even at early bevel setting some razors will tolerate the DMT's but some will chip & then settle nicely if changing to a waterstone etc..
Another example of needing the right stones is say honing a 66-67 HRC Iwasaki tamahagane razor to shave readiness. Maybe it can be done on Nortons but for me, life is too short to find out I would want fast aggressive stones including at polish stage in that case.