I guess if we dropped even more bombs and spread even more chemical the result may have been different
Bob, I'm afraid with that one sentence you've demonstrated your complete lack of understanding of how the conflict unfolded. As I said, read the book, it'll give you a taste as to who won and why.
Some (a very small part) of my views were influenced by visiting "The Museum of American War Crimes" in Ho Chi Minh City
A good example of how they won by means of propaganda. Have you heard about the Hanoi directed war crimes? Makes Mai Lai look like a Sunday school picnic.