Los Angeles (AFP) – Warner Bros.’ new film “Black Adam” blew away all competition this weekend, leading the North American box office with an estimated take of $67 million, industry watcher Exhibitor Relations reported Sunday. A superhero origin story spun off from 2019’s “Shazam,” “Black Adam” stars Dwayne “The Rock” Johnson as the titular villain, a former slave endowed with miraculous powers by ancient Egyptian gods. “As a spinoff, this is a strong opening,” David A. Gross of Franchise Entertainment Research said, adding that it was a “positive and steady step forward for DC Comics,” the g…