Its not like he is replacing someone that is good though. Even through Flaherty's "hot steak" he has a 608 ops. In the spring Brob looked fine defensively. I think he will be a good size upgrade. Even if he hits 50 points below his career of 750.
I'm not counting on much with him offensively or defensively. He's only good size upgrade if he stays healthy long enough and is productive. When in doubt, you usually want the younger player.