DUBAI: Can Ryan Reynold’s Deadpool save the Marvel Cinematic Universe from superhero burnout? In an early scene in Shawn Levy’s “Deadpool & Wolverine,” the Merc with a Mouth promises to return glory to the MCU. I’m here to tell you he’s not far wrong. Marvel’s only cinematic outing of the year — and its first R-rated one — is an earnest attempt at reviving a genre that reached its zenith with 2019’s “Avengers: Endgame.”