"He was trying to be defensive," he added. "I heard he was going 'agh' with the pain. He is very brave. But I think I did everything I had to do to win the fight.
Beltran left heartbroken
"It was horrible, he was holding too much. Everything was against me, it always is. In the people's eyes I am world champion."
Burns revealed he had suffered a dislocated jaw early in the fight and he told Sky Sports2: "What a fight that was - I take my hat off to Raymundo.
"I don't know how I got through that, I can hardly string two words together out here. I knew it was close: I was trying to stick to my jab. He was coming in swinging.
"I was worried about getting caught on the jaw again, when I did the pain was incredible. I'll get this jaw sorted and maybe me and Raymundo can do it again.
"I would have liked to have gone out there and put on a better performance.
"From the end of the fourth I was more concentrated on not getting my jaw hit.
"I take my hat off to him it was a good shot (in the eighth) but when I got up I was fine."