Could be that lately, 3rd party devs have gotten better at gimping their 360 ports to avoid this exact controversy. There were lots of these discussions when the PS3 first came out.
So you are saying that Ghostbusters pushes the envelope so much on the graphic side on the 360 that the developers werent able to copy that on the inferior PS3 console?
We know today, for a fact, that the PS3 and the 360 is more or less Equal when it comes to graphics power. The games prove it, there isn´t a game on the PS3 where you think"this couldn´t be done on the 360" and there isn´t a game on the PS3 where you think the same about a 360 version.