There are small differences, but truly, I have not heard of many happy people with the results from their RV washers/dryers. Often its load size and the time it takes to complete.....
On LONG RV trips in our bounder, we just stack huge piles of dirty clothes in a hamper. We'll go through a town with a washeteria, chunk the clothes in 5 or 6 washers, I'll watch while my DW goes on a food run. By the time she is back the wash cycles are generally over and into 5 or 6 dryers while we eat.
The whole process is honestly really quick considering the laundry amount. We'll just fold as we go down the road.