There is a reason that trailers are called "Ultra lite" or equal wording. They are not built strong enough to have a large payload number. Lighter tires and axles, less structure, lower capacity water tanks, built more for weekend getaways and not long distance extended stays. When we bought our TT the payload number was meaningless to me, now it sure matters. My CCC is 1250 lbs, which sounds like alot until you look at all the stuff you take. As said before to raise the CCC you need heavier axles and tires and structure assembly. To do that means cost and weight.
2009 F150 XLT crewcab 5.4L and 3.73
2010 Flagstaff 27 BHSS