Perhaps you can explain to me why CoD 4 looks amazing on the PC, and like shit on the PS3/Xbox 360.
Oh, look, everyone can take a single example out of the air and say, "this is how it is." That doesn't make it true, does it? Nor do quotes from few developers make a point true, when you'll find few developers saying the opposite thing about any platform.
Sweeney, who you quoted above talking about the state of directX back in early 2005, had a more recent interview where he talked about the PS3's SPEs. Also on Anand. Go read it -- he basically says that they're good at some things, can do a passable job at making up for the lack of PPE at other things, and suck at others. He had a far more positive outlook on the Cell than most developers, but he recognized its limitations as limitations. Unlike a certain developer of a spy espionage game coming out soon that overestimated the power of the Cell and complained.
There's always an excuse for "why does your game suck", and saying, "well, we didn't put many resources into that part" isn't acceptable. But for some reason saying, "this platform sucks" seems to be more well accepted, especially if it isn't a platform where the users have developed an inferiority complex. The PC is one such scapegoat.
The PC has superior computing power to the PS3, superior rendering power, vastly superior memory capacity, superior storage capacity, and vastly superior default input mechanisms than the PS3.
