With the final road trip in the books (as it were), the Mets 2013 road record finishes at 41-40. This is significantly better than their home record, which stands at 32-45 with 4 games to play.
One obvious reason for this disparity would be park factor. While the Mets decided to shrink the dimensions of Citi Field prior to the 2012 season, it’s still not a band box. In fact, you can fit almost the entire field at Citizen’s Bank Park inside the fences of Citi Field: