I liked the first Pirate movie, but they got worse as they went along. It was more about cool fight scenes and special effects. All three of the Ring movies were great. I know people complained about the length of the third, but it still was great. I would almost consider the Lord of the Ring trilogy the greatest of all times.
I know some one is saying "What about the Godfather?" Well the first two are unbelievably great, but the third was a let down and I would almost not even consider it part of the first two. Then you have Indiana Jones, the first and third were great, the second... a little cheese. Don't even get me started on Back to the Future.
So to call Pirates the greatest trilogy of the decade is just a horrible lie. Shame on you Disney and others involved in the movie, know your roll in the decade and don't you forget it!