Avengers: Infinity was packed with action from the jump. One of the biggest surprises is too many fans was how Thanos defeated the Hulk.
During a Q&A with Collider, directors Joe and Anthony Russo, they gave their reasoning for how Thanos was able to take down the big green guy:
“I would say that he’s just that powerful. You didn’t see him actively use the power stone in that fight. I think ultimately, the way we looked at that fight and the way talked about it with our stunt team when we were executing it was Hulk is obviously very powerful, but he’s a little mindless in his fighting style. It’s aggressive, it’s pummeling. Thanos is the Ghengis Kahn of the universe, he’s a very skilled fighter, equally as strong. So when you put those two up against each other, the more skilled fighter is going to win ultimately. Which is why Hulk has a moment where he overpowers Thanos, but ultimately Thanos is smart.”
Everyone will have to wait until Avengers 4 to see the rematch.