EXCLUSIVE: Count gravitational pull as a superpower for James Gunn ‘s Superman as the first movie under the filmmaker’s co-run DC Studios with Peter Safran is heading to a massive $21M+ in overall previews,

Though “Superman” will handily soar to the top of box office charts, the Last Son of Krypton could face headwinds from fellow summer blockbuster “Jurassic World Rebirth.” Then another comic book epic, Marvel’s “The Fantastic Four: First Steps,” arrives at the end of the month.