Ok, can I say what I think?
I think SR need 2 trailers, because people are more exciting about POTC2 than it.
And after so negative reviews, I dont think DVC will get more than $280m. Also, some people didn't want to see, because they are catholic. And Catholic church banned DVC to be released in some places. That is really bad for box office money.
But as people have big interest about it, they will go to see it. So DVC will earn big, but not so big money.
About POTC2, I will agree with you, everyone want to see it.
But SR promoting has started in necessary time. So it is good. People will see 2 trailers and a lot of tv-spots. I don't think SR marketing is good, but also it isn't bad. We all know that there will not be any supervillian, but there is another bigger problem, New Krypton. At nowadays ecological problems are the most dangerous problems for our planet. And I think even haters will go to see it, only because they have interest about how it will be. So if SR get good WOM and positive reviews, it will easly make more than $280m. I also think it will get huge opening weekend.