Can you guys give me the LOW DOWN between the GM/Chevy PU & Dodge

I know 2 big outfits that sell cowboy trailer pulling trucks all 3 brands (NO not any Nissnas, even with Cummins). They will tell anyone the Dodge Cummins are the best truck, value for $, cost, resale, longevity. They will have some that will only buy the Chevy, some ay ride a little better, some will buy just the Ford, they love the PowerStroke. We are talking 1 ton . and up Diesel pickups here.