I doubt PS3 will use d3d. Meaning if any graphical optimization is being done with that in mind, it will probably be written more for openGL, and if that is the case nvidia > *.
It's really all about API. If your comparing how each company runs d3d, and nvidia even does compare, I'd go with nvidia, because it's running it's "off API" at a rate that is pushing the competition.
I personally, wouldn't buy hardware for a single software title, so I just go with what I think will run the most vast array of games, in case I decide to play other stuff. I'll be going with a pair of 6800GTs.
It's really all about API. If your comparing how each company runs d3d, and nvidia even does compare, I'd go with nvidia, because it's running it's "off API" at a rate that is pushing the competition.
I personally, wouldn't buy hardware for a single software title, so I just go with what I think will run the most vast array of games, in case I decide to play other stuff. I'll be going with a pair of 6800GTs.