Re: Black and White to feature only Gen V Pokémon pre-National Dex: Feature announced
But that's been true of every region. No region has one of each type in perfect balance.
I don't understand how that came out confusing, but what I meant was that due to the relatively low count of species (151), some types might have no more than three representing evolutionary lines in the Isshu Dex. Kanto only had one Ghost line (Gastly) for the Ghost type and one for Dragon (Dratini); Sinnoh originally had two for Ice (Sneasel and Snover), two for Fire (Chimchar and Ponyta) three for Electric (Shinx, Pachirisu and Pikachu) and three for Dragon (Gible, Dialga and Palkia).
But that's been true of every region. No region has one of each type in perfect balance.