I think theres much more to it than that. QTs own personal film aesthetic is heavily influenced by Scorsese. Hes said it many times in interviews the directors that influenced his personal style most were: Leone, Hawks, DePalma and Scorsese.
One example: Where do you think QT got the famous Mr Blonde ear camera shot from? Its from Taxi Driver, when the camera pans off of Travis Bickle and moves to a shot of the empty hallway.
Theres alot of things QT has learned from Scorsese in terms of editing and how to use pop music within a film.
Just because Scorsese isnt a writer/director doesnt mean QTs visual ideas arent influenced alot by his mastery of cinematic storytelling.
