honestly the main differences between canon vader and masquerade!vader are thus

canon vader: is a dumbass and human dumpster fire

masquerade!vader: is a dumbass and human dumpster fire, but is aware of this, and largely unable to change these facts. alternates between quietly screaming into his own hands about this state of affairs and dumping some more gasoline on to things because may as well be a brightly burning trash fire we here for a good time not a long time hashtag yolo