Dwayne, I believe you are correct in that the Lost World did not have the same issue that the first jurassic park DTS did. Bjoern did testing between the DTS and DD dvd's on his website.
I think the people who were unhappy were the ones who ordered the $60 plus dollar 3 disc box set, as this was supposedly the only way to get the original version. So a week before the release date, it starts to get around that the $15 two disc set will have both. I know I would have felt mislead...