The game should have a really good opening weekend simply because it's One Piece which is super popular here in Japan. After that I don't know how the legs will be.
The game is getting hammered on Amazon JP. Out of 535 reviews, 207 have given it 1 star, almost 40%! Combined with the 2 star ratings (113 for that), about 60% of the reviews are 1 or 2 stars. Even DQ9 which got bad reviews on Amazon JP when it first came out had roughly 20% for each of the five star ratings (mixed opinions) although the ultimate hits version is rated higher.
http://tinyurl.com/6w4k6xu (Amazon JP One Piece page)
starcraft: "I and every PS3 fanboy alive are waiting for Versus more than FFXIII.
Me since the games were revealed, the fanboys since E3." 
Skeeuk: "playstation 3 is the ultimate in gaming acceleration"
