Plus, lets face it, saying that someone is healthier than your average American is like saying that your average American is healthier than your average chemotherapy patient. The bar isn't that high.
I also believe that I heard in a lecture once that of the Adventists studied, it was the ones who were Pescatarian that were the healthiest.
I agree with you though, I think there are ways vegetarianism can be healthy.
My comment about Durianrider had nothing to do with vegetarianism as a whole. Rather his angry, fat-phobic blog posts.