I don't see it the same way, I don't feel like Hulkbuster kicks his ass, Tony hits him with every trick he can and Hulk keeps defying it and unloading more rage on him.
It took dropping an entire skyscraper on top of Hulk just to knock him out enough to notice what he was doing, and despite starting to get mad again, the final blow was during a subdued moment for the most part, repeated blows to the head did nothing during the "go to sleep" sequence but piss him off more.
The only thing that could have made me more excited during that fight is if throughout all the smashing of things, he talked and we got some "Hulk smash!" and "Hulk bash!", the nostalgia factor would have just tipped it over the edge for me.
Hulk punching the worm was a great moment, beating Loki was a great moment, punching Thor was great, I just feel like his shine in Avengers comes down to a collection of flashing moments, enjoyable, but at a point now where Hulk can't get his own movie, I look to Avengers to satisfy my Hulk desire as much as enjoying the whole team, and when Avengers came out I was very satisfied with it and still am, but AOU was even more satisfactory. I feel some of the team aspects were less satisfying for me in AOU, so it's a trade off. If Infinity Wars blends both elements just right, could easily be some of my most favorite films ever.