Carbon largely gets used as a marketing buzz word and as a result muddies the water causing confusion. There are very few true carbon films out there, most have just enough added during the dye process to justify use of the name. To answer your first question, yes most "carbon color stable" films are just a better quality dyed film. In the case of the two films you mentioned Suntek Carbon is a dyed film and CarbonXP, or as it's more commonly known CXP, is their ceramic film and will offer higher heat rejection.
