The timing of GTA5 release are the worst that could happen to Pokemon X/Y. With all the media and fanboys from all over the place talk about a "behemoth of a game" with 1 billions sales in revenue nobody seems to remember about X/Y anymore.
Before GTA5 I was very confident that Pokemon X/Y will have the most successful launch day on the history of the series but now I'm not so sure any more. All the money that Nintendo spent on marketing campaigns for X&Y suddenly become a waste overnight when nobody even mention about it anymore (it's GTA, GTA, GTA all over the Internet). Right now I would be very happy if it could sell about 500k copies on it's first day.
God gave us the English language to troll on Gamefaqs :)
Different audiences, completely different types of game the fact that I am positive GTA V's success will not even put a scratch in how well the game sells in japan. It doesn't matter if no one mentions it anymore: its been mentioned enough. ANyone who would want it knows of it already. Doesn't hurt that most game stores, where gta was sold, have had pokemon kiosks up for months, and some (gamestop) are till offering dowlnoadable pokemon that people are till coming in to get.
This game will do fine.
I cannot protect you without holding a sword. I cannot embrace you while holding a sword.