no different than on a bushwalking trip, when I have to carry my gear. A tent would make no difference to the comfort level, just a psychological one for some campers.
On a motorcycle I can afford to have fresh food instead of dehydrated since weight doesn't matter that much, but that really is the only difference. And when car camping (rarely) if I am not forced to be in a busy campsite (ever more rare) I would use the same set up. There is a certain satisfying feeling of sleeping out where one can have no wall between him/her and nature that is hard to describe