VoidTerraFirma
Live to wine
It might just be that people really like the Petrucci sig even if they don’t care about Petrucci. The PRS Tremonti is wildly popular with metal players who can’t stand Creed or Alter Bridge. Likewise, I doubt most of the metal players who buy a Duncan JB pickup ever listen to Jeff Beck.
This. I really can't stand Dream Theatre but I've had 3 Petruccis. They're just killer guitars.