Lol. I think technically DLC is a subset of PVD. But I hear you, the GML could be a non-DLC PVD.
@jamieinoc probably knows
I haven’t gotten a straight answer on the Milanese. Apple sales swears that the watch is DLC, though. DLC is formed through PVD, but so are far less scratch reisistant coatings like the Gold Apple Watch coating.
DLC is far more durable and scratch resistant than standard PVD (and PVD is more scratch resistant than bare metal).
PVD stands for Physical Vapor Deposition and involves vaporizing a metal and then condensing it on the watch case to form a protective (and colored) film.
DLC involves vaporizing carbon particles and fusing them to the surface of the watch case through PVD until they form an extremely hard and protective finish on the metal case of the watch. This Diamond Like Coating is extremely hard (as hard as diamonds) and therefore is more likely to scratch a surface it comes into contact with than become scratched itself.
Carbon is black so my fear is that the lighter color of the new Graphite watch indicates less carbon in the PVD vapor during the DLC process and therefore a less scratch resistant coating.