>>23090264>levelsIrrelevant
>EVsIrrelevant
>movesIrrelevant
>naturesValid
>genderIrrelevant
>abilitiesValid
>the 700+ different speciesDoesn't mean jack shit when talking about inter-species differences.
IVs separate 1 pikachu from another. Everything can literally be one of 3 genders, You'll ALWAYS have a Pikachu that is either male or female. Levels, EVs, and Moves all change based off of training, and are completely irrelevant to separating one pokemon from another.
Abilities can vary, so, that is a valid way of differentiating. Same with natures.
But the rest? That's just being an idiot.