There is absolutely nothing surprising about a player hitting first or fourth, depending on the handedness of the pitcher, and depending on the other guys in the lineup (who might have different sorts of splits). Some guys walk a lot more against one handedness and hit for more power against the other.
What is surprising is McCutchen batting higher than 7th against RH hitters. In fact, he should probably be the 5th OF on days when a RH starts.