Gregg - who revives his Agent Phil Coulson role in the Marvel TV drama - told Entertainment Weekly that the series brings cinematic spectacle to the small screen.
"Marvel has such a lock on how to do really incredible visual effects and stunts," he said. "We've got stuff on our show that I just don't think we've seen on TV before."
Gregg's character Coulson was killed in the Avengers Assemble movie, but the star insisted that the character's resurrection in Agents of SHIELD will not "undermine" the events of the movie.
"I was really surprised to get that call and I wanted to make sure it didn't do anything to undermine what we achieved there," he explained.
"When [writer/director Joss Whedon] explained the mystery and how they planned to deal with it, with Agent Coulson being around, I was very sold."
Marvel's Agents of SHIELD is due in the autumn.