I can't answer your question John, but I have made the observation that nearly all campers have load equalizing hitches (many with sway), and very rarely do I ever see an equipment trailer with such. Weights, wheelbases etc. are similar as are tow vehicles (mostly). My guess is most equipment trailers are used on shorter trips with little freeway driving. It should be fairly easy to add these features to a typical equipment trailer. Good luck,
Rob