>>16375374Since they introduced the Friend Safari there really aren't many truly exclusive Pokémon. Dragalge and Clawitzer are the only true Gen VI version exclusives, along with the box legendaries and a few water Pokémon like Shellder.
Really, the only important thing about the versions are the Mega stones, as most people won't be willing to part with them. It's a shame they took a step back with the version-exclusive features, BW2 did it pretty well.