Strongly doubt it, but the shiny rate was increased in X and Y at bare minimal, so it's likely that it was increased for all of Gen 6. Meeeeeeeeeeeeeeeeeeeaaaaaaaaaaaaaaaaaaaaaannnnnnnnnnnnnnnning you could say it's increased in ORAS or you could say it's exactly where it should be in ORAS. Depends on how you look at things. Then there is the fact it could be greater in ORAS than in X and Y if so I NEED THIS GAME e0e