Vans or vans with seats with no load in never feel that good towing due to poor weight distribution. If it has a good evenly distributed load in the back it will feel better but due to high payload allowance in a van its unlikely your normal camping gear will give it enough weight in the back.
A commercial vehicle will always be a compromise due to large difference in kerbweight & fully loaded weight. If you are loading a van, ideally you distribute the weight, but if you take an empty van & hitch a caravan to it then you are putting all the weight on the rear end so it ain't going to handle that well.