A film is sort of binary - it either works or it doesn't work. It has nothing to do with how good a job you do. If you bring it up to an adequate level where the audience goes with the movie, then it works, that is all.
I was going to go to a four-year college and be an anthropologist or to an art school and be an illustrator when a friend convinced me to learn photography at the University of Southern California. Little did I know it was a school that taught you how to make movies! It had never occurred to me that I'd ever have any interest in filmmaking.