No way would Hulk have sided with Ross, he would have been Team Cap and it would have been an eve bigger catastrophe where the government was concerned because of Gen Ross's personal prejudices against him.
Bruce already has issues with the collateral damage he does as The Hulk. He's tried to find a way to prevent it from the start. He's also in the same boat as Thor and the other Avengers with real powers, he can't just hand over gear. His abilities are always there.
Besides, he's on the way to another planet for his own movie.
Besides, he's on the way to another planet for his own movie.