Huh? What recent events would get people to change their mind about which console to by it on, or whether to buy the game?
People might decide not to get the game because of that information, but that doesn't make a lot of sense. The game is the same today as it was yesterday. The decisions SE made about the game were the same yesterday as they are today. Your opinion that FFXIII was compromised in some way by going multiplat is the same today as it was yesterday. Really, what has changed?
Perhaps what's changed is that you now believe your opinion has been validated? So what? You had that opinion before, it pissed you off then but you were still going to get the game. Now you think your opinion has been confirmed as fact why does that make you so much more more pissed off to the point that you are not going to buy the game, or considering not buying the game?
Anyone who thinks FFXIII was compromised for the sake of the 360 and is pissed about it wasn't going to buy the 360 version anyway.
I don't think this "revelation" is going to affect sales at all, and it isn't going to have any effect on the PS3 vs. 360 sales distribution either.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix