Anaheim also acquired the Mickey and Minnie ghosts and the Goofy figure seen above and they are also visible along the Disneyland tram route. I am guessing Anaheim didn't want the Marie (Aristocats) ghost figure. (By the way, Marie is a VERY popular character in Tokyo and is depicted on a fairly large selection of Tokyo Disneyland merchandise.)
These ghost figures, Pluto and the pumpkins that spell out "Halloween" were also brought to Anaheim to use the following year.....and the next.....and the next....and we will probably be seeing them again next year, but hey....it's better than nothing, right? I'm guessing that the reason Tokyo changes their figures every year (other than the fact it appears they are not afraid to spend money), is that the figures' costumes reflect what the actual park characters are wearing in the Halloween parade each year. Yes, Tokyo Disneyland has a Halloween parade and THAT changes every year as well....they don't just trot out the same floats year after year. They go to all this effort, for park decorations and a parade that are only in use for about 7 weeks. Oh, and they write an entirely different soundtrack for their Halloween parade every year, done in the classic Disney parade style.