Unlike Pokémon, male the evolution of Digimon isn't easy, some digievolutions are hard to how they choose so random and I wanna to know why A_A, Patamon > Angemon for example, wut. :°
I know, Pata>Ange is one of those random ones. I always took it that it was some sort of hidden strength/potential thing, but then I didn't really care 'cause Angemon's my all-time fave! XD