Superhero films have more clout than ever before, and Marvel Entertainment has a lot to do with that. The media giant has done a remarkable job transitioning its comic book characters to the screen with movies that balance keen storytelling and astonishing visuals. The company’s latest success is “The Wolverine,” a new chapter in the ongoing saga of Logan (Hugh Jackman), a nearly immortal mutant armed with razor-sharp, retractable claws and an indestructible metal-plated skeleton.