Dusty lets his catcher's call the entire game, he said he doesn't tell them anything about what to pitch.
Cueto was dominant with his location and his pitches, but I wonder how much credit goes to Bako for calling the game. On Redleg Nation there was a great post about how well the batters were setup:
http://redlegnation.com/2008/04/03/cuetos-first-start/
Most of the credit goes to Cueto because he was the one throwing the ball and hitting his spots, but Bako may deserve some kudos as well.