My SRW must have been really dialed in well - My DRW handled like my old SRW with the same truck camper while towing an enclosed trailer. The main difference was the SRW had been upgraded and the DRW was stock. The SRW did sway more when going over driveway approaches, but actually had a more comfortable ride loaded or empty when the roads were poor.
Now that my DRW is carrying an extra ton (carries a 3-ton camper), the ride quality is better than my SRW carrying my former 2-ton camper. And no, I would would not have considered carrying that weight on a SRW with the enclosed trailer in tow.
No postulating or imagining on my part...