Yeah, but a male Kirlia can become a Gardevoir OR Gallade, but it´s still the same Kirilia as a female one (eventhough it can only become a Gardevoir) (Or like Waumpel can become 2 different Pokemon too - It´s kind of a point of view thing)
I know that they have different numbers; But basicly they are the "same" Pokemon just with different Genders (and nothing agains Gen I, it´s the best Gen!)