The Man with the Iron Fists (2012): Why is Tarantino's name attached to this film?

Last night I watched "The Man with the Iron Fists" on DVD. The reason I was so eager to watch it is because the DVD I borrowed mentioned Tarantino somewhere, and I thought he was the director. But I just learned through IMDB that the only reason why Tarantino's name was attached to the film is because he lent his name to attract viewers, due to his personal and professional friendship with RZA (main actor, director and screen-writer of the film). So, I was disappointed to see that he actually had nothing to do with the film, other than an acquaintance with the actual creator and main actor. Although I enjoyed the film, I feel a little bit cheated, because the only reason I took the film was because of Quentin Tarantino's name on it.