I had a 35ft Jayco fifth wheel and I can say, fifth wheels do tow better than trailers but it isn't that much of a difference. In comparison, I had a ft 34 Terry trailer and it towed well with the equalizer hitch and sway bar but not as good as the fifth wheel especially on windy days.
Unlike the trailers of old, most of these newer ones have plenty of clearance. Haven't scrapped the rear of mine yet and most all of my travels are off road in the hills with lots of dips getting to a camp. My 34ft Terry used to scrape all the time.
Taking am ATV along is important to some. My son and I yesterday in his truck with a 700 Grizzly in the back and a 24ft Security trailer.