>>19691261The execution of the anime.
Digimon had a similar character that was pretty edgy, cold and all about winning.
To develop her character away from that it took, in order, staring down the barrel of a gun, her partner sacrificing herself for her, a more edgier monster wanting her as his partner who basically showed her corpses to impress her and finally her partner abandoning her.
Its a more gradual process where punches aren't pulled, while Paul seems to go from 1 to 0 very quickly with little actually coming from the characters introspection.
Comparing Pokemon to Digimon is mean though, since Digimon always at least tried to be mature, whereas in Pokemon's running time these things just happened, death, murder, destruction, mind tentacle rape, depression, guilt and abandonment are main points of story arcs.