New 2015 Ram 1500 ECODIESEL HFE

i am a die-hard Ford guy, and really took an interest in the EcoDiesel as a compromise. I'm fed up with feeding my F350 as a daily driver to tow my Jay Flight 32BHDS. I THOUGHT I could step down to a 1/2 ton EcoDiesel and step down to a lighter trailer. NOT. Not with a family of four. The stop at the local Ram dealer tonight proved by the sales manager that 1,200#is the payload for a crewcab 1500 Ram with the EcoDiesel. What is the sense anymore? To get 25mpg hauling... groceries. Kind of disappointed.