Paul Morigi/Getty Images Ryan Gosling may have not been Kenough for Barbie, but Sylvester Stallone thinks he would make a fantastic Rambo. “I met [Ryan] at a dinner,” Stallone, 77, revealed during an episode of The Tonight Show Starring Jimmy Fallon earlier this month. “Obviously, we are opposites. He’s good-looking. I’m not. Seriously! Could you…