The reason I combat you, is becuase you are simpley not giving enough credit to the movie, even by saying it is fun, you say it with a double edged sword, you kind of mean it, but at the same time you degrade it by saying that. In scope Pirates is epic, you can say whatever you want about it being a fun movie, but it isn't hard to read between the lines with what you really mean.
I will however, like I have been saying, will wait till May to give my final assesment as to what the biggest franchise of this decade is, because both Pirates, and Spiderman come out. But all I am saying, is as far as fandom goes, Pirates has created a buzz unlike Spiderman, and LOTR, again not saying they aren't great movies, just they haven't generated the same kind of buzz Pirates has, it also has the box office receipts to prove it, obviously you don't care about those, which is bull, because it plays in huge in this discussion.
Critcal reviews where lukewarm, sure that is fine, but fan review sites all have very nice reviews, like the 7.5 on IMDB as an example, and in the end which is more important? You can sure formulate your own opinion, but I would say movie goers are what counts in deciding what a great movie actually is.
Like I said the box office doesn't lie, you just have to know how to read it. People though POTC was good enough for mass quantities of repeat business, whereas they didn't think that about SR, X3, MI3. That is why I always bring the BO up, because if a movie makes that much money, that is obviously repeat business, and millions of people thought it was good enough to drop a total or like 40+ bucks on it to see it 2 or 3 times