An additional point about batting orders is that they should be set based on credible projections, and not based on in season performance to date, especially not based on performance over the past 2-4 weeks.
Current credible projections, which include season performance to date, correlate much better to how a batter will perform the remainder of the season than how hot or cold a batter has been over the last month.
The good news is, it seems that managers are coming around somewhat in terms of putting their best OBP guy in the lead off spot and putting one of their best hitters in the #2 spot.