Did the Giants trade their ace away?

When the Giants dealt Bengie Molina to the Rangers, it looked like a straight forward deal that helped both teams, both directly and indirectly.The Rangers got a steady defensive catcher in Molina and the least likely cycle in baseball history.Texas had a 3 1/2 game lead when he arrived. They have an 8 game lead now.The Giants landed Chris Ray who gives San Francisco much needed bullpen depth.