The PS3 has BluRay....more space than what they can ask for.
and its not like they are a company that is worried about pissing off another platform, just so the other has more "features".
I mean they went ahead and released a 60fps Madden 08 on the 360, were as the PS3 version stayed at 30fps, but still lost legit 3D grass, high resolution player models, HDR lighting, etc.
so what is the excuse now?