Hello...new guy here. I'm looking into purchasing a preowned RAM 1500 or 2500. In doing research I found some data that's confusing. A 2013 RAM 2500 4x4 shortbed crewcab Hemi (4.10 gears) can pull up to 13,550. The 2013 2500 Power Wagon 4x4 Hemi (4.56 gears) can pull up to 10,250. Why the lower tow rating with the Power Wagon? A RAM 1500 4x4 Hemi crewcab shortbed (3.92 gears) can pull up to 10,050. Only a slight difference from it's big brother Power Wagon. I got this info from a towing magazine. Is this accurate? Thanks! Todd