In terms of the audio or video quality a consumer experiences, replicated discs are identical to duplicated discs. However, there is a very small possibility that if your discs are duplicated there might be some older generation disc players (including in cars) that experience errors when playing the duplicated disc.

CD duplication is the process of taking blank, recordable discs (CDRs or DVDRs) and writing the information on them with a laser. CD duplication involves burning audio or data onto the CDs using CD duplicators. Once the process of duplication or replication is completed, the discs are put into chosen packaging options.

CDs are way cheaper to produce than vinyl records, which in turn means they're cheaper for fans to buy. And you'll have a much easier time finding a CD player on the cheap, too.