Referring to everyone asking why datel is saying its "fake" i don't believe they are trying to say it will make your game crash, or that its not a real pokemon that you wouldnt be able battle with online or on the game, i think it is as legit as it comes on that end of things. i believe they are just saying that the event in which you would receive it is not legit and when the real event or wondercard (how ever they choose to release this) is released and you go to activate it, that MAYBE nothing will happen and the LEGIT event will not activate because it will think that you have already activated that event when you use this code. sounds like on this one datel isnt even sure them selves. they are just giving you a heads up to use at your own discretion.
those are just my opinions on what I believe they are trying to say with that small info box they say to check before using.
also Kaphotics I believe said the event info on the card is also not accurate info. so there is also that.