Rebecca Rubin Film and Media Reporter Disney’s “Guardians of the Galaxy Vol. 3″ was victorious again at the domestic box office, adding $60.5 million in its second weekend of release. Ticket sales dropped by 49% from its debut, marking an impressive hold… at least for a superhero movie. Across more than 30 Marvel entries, only “Black Panther” (45%) and “Thor” (47%) have had stronger second weekend holds. By comparison, recent Marvel movies such as “Ant-Man and the Wasp: Quantumania,” “Doctor Strange in the Multiverse of Madness” and “Thor: Love and Thunder” declined by nearly 70% in their sophomore outings. Those are brutal falls, even for movies that debuted to more than $100 million. Those entries were reminders that Marvel may remain critic-proof in terms of opening weekends, but they’re no longer immune to quickly falling back down to Earth.