The on-loan Chelsea youngster headed home the winner in the second-half.
"I've seen him do that before. He is a big strong lad and I think at that stage of the game it's about can you press the ball," said Hughton. "It's difficult to press the ball in all areas because at that stage you are in a shape and you have to be resilient and hope that you can deal with most balls.
"The large majority of the balls we dealt with all afternoon, but I think you have got to give the lad (Lukaku) credit. I think that's why they have bought him in, that's why Chelsea have paid so much money for him, he is a big lad and I think if he gets in those positions he is going to be a handful."