Are separate ORAS entries really necessary? The OR & X entries and the AS & Y entries are identical for almost every Pokemon.
EDIT: I looked into it further, it seems for gen 1&2 Pokemon, each 'mon has 1 new entry, which is used for both OR&AS, for gen 3 Pokemon, each 'mon gets 2 new entries fro each game, while gen 4-6 Pokemon have the same entries as XY.