I saw the "Body Worlds 2" exhibit when it was in Toronto these past few months, and I was awed.
Linky:
http://www.bodyworlds.com/en/pages/home.asp
It sounds like "Bodies: The Exhibition" is a competing venture; possibly a less scrupulous one. As I understand it, the Body Worlds specimens were all acquired through a rigorous consent process, so I think the ethical question is less an issue. On the whole, the exhibit was pretty clinical and wasn't overly sensational; though I suppose that is subjective. For example, along side the posed bodies, each of the main organs and regulatory systems were presented separately, in various states of age and condition. The exhibit really took you step by step through the mechanics of the body. They had sets of lungs from a non-smoker, a smoker and a coal miner laid out next to each other and the differences were amazing (the coal miner's and smokers looked very similar and very degraded).
Also, the fetal development section was set off to the side, in a sort of shelter, where it was quiet with dimmer lighting, and you didn't have to pass through it if you didn't want to. I thought this was the most fascinating part of the exhibit, and only strenghthened my sense of wonder at the human body.
Are they profiting from it? Yes. Are they educating the public in a positive way? Yes. I can't speak for the OP exhibit, but the one I saw was no exploitive freak show.