>>22023132Pearl is over Diamond because Cyrus wants to create a new world, so acquiring a space deity makes more sense than acquiring a time deity.
Gold is over Silver because the Kimono girls give you the Clear/Tidal Bell. It makes more sense for them to give you access to the bird that is closer to their home.
>>22024619Sapphire is over Ruby because it makes more sense that Team Aqua's hideout would be in a port town, they'd be training Wailmers and they'd be after a Pokemon that sleeps underwater.
White/White2 is over Black/Black2 because Reshiram originally went with the older brother while Zekrom went with the younger brother. In B/W, N acts as the older brother while Hilda/Hilbert act as the younger brother.
