Guardians of the Galaxy Vol. 2 was edited by Fred Raskin and Craig Wood, who also did the editing for the first Guardians of the Galaxy.
Even for a sprawling blockbuster like Guardians of the Galaxy Vol. 2, it’s ideal for most action movies to keep the runtime as close to 120 minutes as possible, if not under.
Ultimately, the success of Guardians of the Galaxy Vol. 2 will come down to not the runtime itself, but the pacing and character development.
At 135 minutes, Gunn and the editing team appear to have found the sweet spot they needed for the runtime of Vol. 2.