No he's not wrong. Taking out the score of a movie and listen to it without the movie, is like watching the actors in front of the green screen, without the implemented CGI. Sure, you can see if they're good actors or bad ones, but they would never get the same reaction from the audience. A movie is an art form that brings many arts together so that they work as a whole. Only together they unfold their full potential. I recently listened to the soundtrack of Das Boot (hasnt been mentioned here yet?), which works just awesome with the pictures. But on its own its not that catchy anymore. Some scores do work on their own, like the Braveheart main theme, but that doesnt mean they were intended to stand alone in the first place.