The games came before the anime, and they've been doing doing this since Gen I.
I think GF just doesn't want the games to be too hard. The main story, anyway. Battle Frontiers are hax central but at least you don't have to beat those to progress the story. The devs seem legitimately concerned that if the game's too tough/complicated for younger players they'll get frustrated and move on to something else.
Which is funny with games like Rayman origins and Legends are both decently challenging and kids can play and beat them.
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