That's it, exactly, bruno- off-the-shelf. AK deserved better, something that had some thought put into it. PW, as well as all of Dino-Rama, reeks of cost-consciousness. People were complaining that AK didn't have enough rides, but Eisner didn't want to spend money on anything better, so they took a short-cut.
Let's hope Forbidden Mountain doesn't suffer from the same mind-set.