>>58141452
There’s more hints to Platinum being the canon version than the layout of Spear Pillar from Diamond
>Charon and Darach have ancestors in PLA
>Volo's main Pokémon, Togepi, was once given to the main character by Cynthia, who also uses Togekiss
>The space-time rift on Mt. Coronet is similar to the black rift on Mt. Coronet depicted in the official Platinum illustration, “The Torn World." https://archives.bulbagarden.net/wiki/File:Torn_World.png
>In BW, Cynthia mentions watching a trainer defeat Giratina, which she only does in Platinum
There’s other references to Platinum in PLA in Japanese, like the names of the Miss Fortune sisters, Coin(オウメ Oume), Charm (オマツ Omatsu), and Clover (オタケ Otake), being shared by regular trainers in the Battle Frontier not in DP (Pic related) https://wiki.xn--rckteqa2e.com/wiki/バトルフロンティアのトレーナー一覧_(第四世代), or Rowan having a sweet tooth for Rage Candy Bars in Platinum further connecting Kamado's birthplace being in Johto (he takes on a Kansai dialect during some parts of the game.)