-gives his Sableye a big hug- My Sableye will always exist solely in Emerald. He will forever be safe from those damn murderous fairies. --- Don't forget to check out my MegaTen themed webcomics at http://www.drunkduck.com/user/Strain42/ (Currently Updating: Persona 4TW Add-On M-F)
If Fairy was SE against Dark, don't you think that Gardevoir would have KO'd the Hydreigon in the trailer. It survived with a good chunk of HP left.
How Fairy-type Pokémon and moves will fit into the battle landscape has yet to be fully revealed. But it is known that Fairy-type moves are super effective against Dragon-type Pokémon! Until Pokémon X and Pokémon Y, Dragon-type Pokémon had only two weaknesses: Ice-type moves and Dragon-type moves. The new Fairy type changes the balance in a big way!
It's a crafted battle for a promo video. And we know nothing of the move or any of the Pokemon's stats... Isn't it just possible Hydreigon might have had a high Sp. Defense, Gardevoir had a low Sp. Attack and used a weak base power attack?
And, again, the credible rumor has yet to be disproven on anything so far. I have no reason to doubt what he said about Fairy's matchups. --- "Microsoft is not a helicopter." ~Gerald Ilukwe