There were some very good performances in Angs film, but overall the film didn't work. Having the hulk be 30 ft tall or whatever he was in there, totally took away from those character moments. He tried to remake King Kong rather than make the Hulk. Not to mention the film dragged, and dragged and ultimately lost all interest, it's no wonder it bombed so horribly.
It's also way too complex and Ang got too artsy fartsy. They have flashbacks within flashbacks, like Bruce flashing back to a picture of him and Betty at the cabin in the woods, then her flashing back to when she was a kid at the base being left alone by her father in the ice cream shop. The film was just a total mess that way.
It's not the worst superhero film ever made, but it's by far the biggest dissapointment. Letterier's film had a more sympathetic Banner character, and the fact that Banner was more interesting, made the Hulk more interesting. The biggest problem with the latter film is that it doesn't make a clear distinction on wheather it's a sequel or a reboot. There's an assumption that you already know who these characters are, yet the characters have drastically changed from Angs film.