For those of you who don't know, Red Sun and Blue Moon have different tournaments and navis in them. Also, you can fuse with other navis instead of Style Change. In Red Sun you fuse with Roll (who has a great ability), Gutsman, Fireman, Searchman, Thunderman, and Windman. In Blue Moon you can fuse with Aquaman, Protoman (which is why people stupidly assume Blue Moon is better), Junkman, Metalman, Numberman, and Woodman.