I will cite this just so its clear for everyone.
according to boxofficemojo.com Hulk made 132 million domestically, on 137 million dollar budget, the total worldwide gross was 245 million, now that doesn't sound to bad, but when over Half goes to the theaters, the movie didn't break even. People lost money off of this movie, also Hulk had the almost historic word of mouth second weekend drop of 70 percent, the first weekend it made over 100 million domestically, and it finished at 135, yeah, X3 while having a significant drop in second weekend performance, didn't have that kind of a let down.
Now, my second cite, Rottentomatoes.com, while not being the end all in determining how well a movie was recived, it certianly is an excellent starting point. Has the Hulk currently at 59 percent, and rotten, with the Cream of the Crop (i would assume the most respected critics) giving the Hulk a 50 percent.
I would say those two facts show, it was both panned by critcs, and fans, and has only recently found its little niche amongs people who wish their superhero movies where so overrly complex, long, and those who don't like a lot of action in their action movies (a la SR)