I cant say it will be a crushing blow to PS3's momentum but they will miss out on a huge number of sales due to this, I know a couple of people who had this as there no1 most wanted PS3 game, but now its multiplatform they can instead focus on the rest of the line-ups and choose between 360 and PS3.
We will never know how many PS3 sales are lost due to this as an incress in 360 sales around the time of launch wont be as much as how many extra PS3's would of been sold as a lot of people who already own 360's wouldnt have the need for an extra console.
For all we know this game could of done what FF7 did for PS1 but now its multi-plat it wont have as large an impact on either of these consoles librarys and anyone can claim anything from the situation, even when the game is launched we will never know what would of happened a 40% incress on both might have been over 150% If it was just PS3. To me that is a lot of missed sales.
The other thing I feel about FF is that it brings with it more games that would of likely been PS3 exclusive so this may go further than just FF.







