This was discussed by the film's directors, the Russo Brothers in a recent interview. In short, Thanos is as strong as the Hulk and more than a match for him in terms of fighting technique. The only thing Hulk has going for him is raw aggression and that got him a slight advantage at the start of the fight along with the element of surprise.

Note also that Thanos wasn't using the Power Stone to "actively" augment his own natural abilities. Had he done so, presumably he'd have been able to punch a hole straight through the Hulk and out the other side.

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.”

 

_{^{The Russo Brothers Share How Thanos Beat Hulk In ‘Avengers: Infinity War’}}

That all being said, in the Endgame Prelude comic, you can see that the power crystal is lit (at times) during the fight. Although Thanos may not be 'actively' using it, it's possible that he was passively using it and drawing strength from its mere presence.

_{^{Marvel's Avengers: Endgame Prelude (2018) #1}}

This was discussed by the film's directors, the Russo Brothers in a recent interview. In short, Thanos is as strong as the Hulk and more than a match for him in terms of fighting technique. The only thing Hulk has going for him is raw aggression and that got him a slight advantage at the start of the fight along with the element of surprise.

Note also that Thanos wasn't using the Power Stone to "actively" augment his own natural abilities. Had he done so, presumably he'd have been able to punch a hole straight through the Hulk and out the other side.

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.”

_{^{The Russo Brothers Share How Thanos Beat Hulk In ‘Avengers: Infinity War’}}

That all being said, in the Endgame Prelude comic, you can see that the power crystal is lit (at times) during the fight. Although Thanos may not be 'actively' using it, it's possible that he was passively using it and drawing strength from its mere presence.

_{^{Marvel's Avengers: Endgame Prelude (2018) #1}}

This was discussed by the film's directors, the Russo Brothers in a recent interview. In short, Thanos is as strong as the Hulk and more than a match for him in terms of fighting technique. The only thing Hulk has going for him is raw aggression and that got him a slight advantage at the start of the fight along with the element of surprise.

Note also that Thanos wasn't using the Power Stone to augment his own natural abilities. Had he done so, presumably he'd have been able to punch a hole straight through the Hulk and out the other side.

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.”

_{^{The Russo Brothers Share How Thanos Beat Hulk In ‘Avengers: Infinity War’}}

This was discussed by the film's directors, the Russo Brothers in a recent interview. In short, Thanos is as strong as the Hulk and more than a match for him in terms of fighting technique. The only thing Hulk has going for him is raw aggression and that got him a slight advantage at the start of the fight along with the element of surprise.

Note also that Thanos wasn't using the Power Stone to "actively" augment his own natural abilities. Had he done so, presumably he'd have been able to punch a hole straight through the Hulk and out the other side.

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.”

_{^{The Russo Brothers Share How Thanos Beat Hulk In ‘Avengers: Infinity War’}}

That all being said, in the Endgame Prelude comic, you can see that the power crystal is lit (at times) during the fight. Although Thanos may not be 'actively' using it, it's possible that he was passively using it and drawing strength from its mere presence.

_{^{Marvel's Avengers: Endgame Prelude (2018) #1}}