Gerard Butler says he thinks Oscar favorite “Argo” will win Best Picture at tonight’s awards. “Ben Affleck is turning out to really be one of the [foremost] directors of our time,” he told us. “I loved ‘Argo.’ I also really enjoyed ‘Silver Linings Playbook.’ ” But, he added, “I think ‘Argo’ will take the Oscar.” Butler joined Paul Haggis and Madeleine Stowe in hosting the Hollywood Domino and Bovet 1822 pre-Oscar gala Thursday night, benefiting Haggis’ Artists for Peace and Justice at the Sunset Tower Hotel.