Medieval men swinging swords at each other in a battlefield.... Were you expected anything but gore? In braveheart the gore and violence have context, in Passion of the Christ the gore and violence serve purpose, to underline the suffering of Christ (it worked too, when you see people crying in the theaters).
Braveheart was an epic piece of Oscar fluff that also has zero conscience. It was made to win awards. And yeah, the target audience cried during Passion. They also went out and bought a shit ton of movie-related merchandise.
His criticism could be directed at most movies. Not all screen violence has to "have a conscience." It's a silly and pretentious thing to say. And I don't give a shit about comic movies.