Towing comparisons

I am currently towing my 36 foot enclosed trailer loaded to go to the races with a 100% original equipment Ram 3500 single rear wheel Cummings automatic transmission. I am looking at trading for a Ram 2500 2017 model it has a Cummings single rear wheels and automatic transmission. The newer trucks have more towing capabilities than the older ones like my 2006 3500 SLT. My son says that he believes that a 2017 ram 2500 with the Cummings will ride better and tow as well or better than my 2006 3500 .
Opinions?