the concept of combinining these two films is extremely funny but in practice its not that interesting. this is actually just like 80% american psycho normally with a few occasional clips from batman or the machinist. as a narrative it doesn't work and the story is not very cohesive. the title is the funniest part.
I think Neglify said it best when he said it would be better as a 30-40 minute short. The transitions between every scene is incredibly jarring and too noticeable to create a coherent narrative. There wasn't enough inter-cutting of the three films to create something more than just shorter versions of the original movies (American Psycho in particular). The first 15 minutes is Batman Begins, the next 50 is Psycho, and the entire third act is Machinist. The whole project really feels taped together: Every Batman scene is completely out of place and doesn't connect well with the other stories, and the audio editing during some cuts is really bad.
This edit employs a great idea, but fails in execution. Maybe if it was just Psycho and Machinist? I'm not sure, but it could have been much better.