With the millions of people arguing over the XBOX 360 vs the Playstation 3, it's always interesting to get a game developers take on the issue. One of the major points of argument, is that even though the PS3 has better hardware specs on paper, its lack of programming flexibility will hamper its performance. While the anonymous interviewee seems to agree with this point, there's no way to know what we'll see a few years down the road.
"Graphics: The XBOX 360 is a clear winner. The GPU is more powerful. It has more powerful fillrate, and far more pixel and vertex processing horsepower. Part of the reason is their choice of memory, and architecture of pixel and vertex procesing. I can't get into details but the same vertex shader will run much slower on the PS3 than the XBOX 360. The 360 also has a clever new way rendering high definition anti aliased back buffers. To accomplish the same effect on PS3 is prohibitively expensive. For this reason I think many games will have no choice but to run in non-HD resolutions on the PS3 version, use a lower quality anti aliasing technique, or do back buffer upscaling. The end result in all cases is going to be noticeably worse image quality."