Barry Zito - How many games will he win?

With A career ERA of 3.68 and a 120 Million dollar contract Barry Zito Should have the ability to combat the Giants horendous offense. With a terrible spring and a fastball that has been clock around 83mph, Zito seems to be more like a batting practice pitcher than a former Cy Young, Which leads me to the question - How many games will Zito win this year?
He is already 0-3 with a 4.50era