Very different animals. One thing I've learned, you can read all you want about different Virginia & Va/Per blends, but you won't know until you actually try them.
After a while you'll see some similarities between blends of the same manufacturer, especially if given the same leaf used. But then there's stoved vs not, Flake vs plug vs ribbon, how much added sugar/topping? How much perique, what kind of perique?
Cringle flake uses not only different perique than CRF, but different Virginias in different proportions, of vastly different ages. Cringle flake also uses more stoving/"cavendishing" in it's creation, while I believe CRF uses much less.
There's also a big difference in burn characteristics between the two, and what moisture makes the best for the best flavor, IMO.