Aunque ya lo teníamos claro mola que Gunn lo explique:

Kevin Feige is the producer on the Guardians movies. Peter Safran is the producer on this movie. At Marvel, they serve the role of producer and of studio, really. And at DC, there’s a studio and then there’s a producer, so it’s very different in that respect. And actually, I’ve answered that question before, and now I wish I always answered it like I just said. That’s my regret. (Laughs.) Because that’s really the difference.

La entrevista completa.