I can't speak for anyone else, but for me I take much bigger hits off a bong because the smoke is cooled off and it's smoother, compared to taking a hit off my harsh little pipe, know what I mean???...
Depends on the person, I'm sure most bong smokers would say yes, but since I personally don't enjoy them, I would have to say no. They are, without question, less wasteful as a joint or blunt though.