TIH made about 10 million more than Ang's. And the idea that Ang's was poison is also a cop out, even though i'm sure it had some effect on the OW. And it didn't have big legs at the BO, otherwise it would have made significantly more than it did. First Class nearly made 400 million off the back of the utter disasters that were Wolverine and X3. I'd put more blame on the crap marketing campaign and trailers that had unfinished, crappy looking CGI.
By saying he wants Banner to control the beast. That's not how it works. That's not Hulk. Hulk isn't a beast to be controlled. Hulk is a separate entity, he is Banner's rage personified. Banner shouldn't have control over Hulk. Banner shouldn't be able to turn Hulk on willfully. He's not Billy Batson and Hulk isn't Captain Marvel.
And yes you can do that in one movie, if you have a skillfull enough of a film maker.
Example. The first Hulk out in Ang's, he's smashing up Banner's lab. He then stops, looks at the Gamma machine thing, then destroys it. Right there is an example of body language that shows Hulk as a free thinking, individual character who resents Banner. Also the part where he's jumping through the air with a calm, peaceful look on his face. Or looking at his reflection in the water with a childlike wonder.
No dialogue required, but still good characterisation. So the idea that Hulk can't be characterised as an individual character of his own is frankly, ********.