Anything you can do I can do better!! Looks like Shah Rukh Khan competes with Salman Khan not only in films but as ambassador of an undergarment brand. The ad will show Shah Rukh Khan putting on a vest showing his 6-pack abs. Other Bollywood actors like Salman Khan, Akshay Kumar, Hrithik Roshan and now Shah Rukh Khan are all brand ambassadors for various innerwear brands. Will it be anything like David Beckham’s recent topless ad…..