Why aren't Mothim and Dustox the same pokemon? They're both based off Moths
Why aren't Buneary and Bunneby the same pokemon? They're both based off Bunnies
Why aren't Zubat and Woobat the same pokemon? They're both based on Bats
Why aren't Gurdurr and Machoke the same pokemon?
Why aren't Burmy and Pineco the same pokemon? They're both Bagworms