This seems to be based on the same concept as a Japanese film I saw last year, called "Dai Nipponjin". Loads of similarities - superhero down on his luck, walks around looking like a bum, uncaring publicist/manager who's taking advantage of him, not that many baddies to fight. The main difference was that was done as a mockumentary. It was hillarious, but had some really sad/pathetic bits as well - not mushy sentimentalism, just those "damn, poor guy can't get any lower than that can he? no wait..." moments.