Towing comparisons

Is your trailer a goose neck or tag? You have to look at full trailer weight. My brother has a 05 3500 dually with the 6speed NV5600 that we tow a 44 foot goose neck 5 formula stacker. We have rolled over scales at 38k pounds truck and trailer. It tows the same as if we have the single car 25 foot trailer in tow. He have a 2015 3500 single tire with the 6 speed. We’ve towed a 36 foot gooseneck flatbed with 15000 on the trailer. It does the job but is not as stable as the dually. I helped a neighbor go pick up a boat on a 2300 round trip, towed a custom boat trailer empty down and then towed a 30 foot Nordic tug that was 20k pounds. He rented a 2021 Ram 3500, it was brand new, it pulled that boat up the grape vine with no issues at 55-60 MPH and on the way down did not have to touch the brakes cus of the exhaust brake. It was the auto and I was surprised at how well it did.