India, Oct. 6 -- There was a time when Dwayne "The Rock" Johnson seemed not to have been born, but grown in a Hollywood laboratory to be the best blockbuster star with his movies and roles. He had the formula: raise an eyebrow, flex a bicep, make the one-liner, fly a car off an exploding skyscraper (or something like that), save the world, and end up making a billion dollars worldwide. But then came Black Adam. The DC movie was so thunderously hyped, so aggressively marketed as next big superhero tentpole film professing to change the hierarchy of power in the DC universe, that when it belly-flopped at the box office it left behind not just rubble. It also left Warner Bros DC executives dry-heaving into their latte cups. Black Adam is part...