MS' take on system specs
Hmmm... This is interesting. Their CPU calculations match up with the ones I did in the thread in Highly Technical in that the Cell is about twice as fast as the X360 for floating-point calculations. I disagree with their interpretation of the numbers in that I think that there will be a lot of physics calculations in next-gen games. Nonetheless, they are right in that the X360 GPU is much better suited for AI calculations than Sony, they are also right in that it will be difficult to keep the 7 SPE's working at full tilt.
As for the RSX, I'm not sure how much of this is correct, a lot of it is based on speculation and numbers that they infer. Generally their numbers do make sense given their assumptions but there are far too many assumptions to make any hard conclusions. My personal opinion is that one GPU may be marginally more powerful than the other one way or another, but it's hardly an earth-shattering difference and probably won't be noticeable in real games.
I don't like their bandwidth calculations though, they're spinning the fact that they have eDRAM into them having a huge bandwidth advantage that simply doesn't exist. In practice, the PS3 has more system bandwidth but the eDRAM may prove more beneficial in actual gaming.
In the end, I think that the article puts the PS3s numbers in perspective. Their calculations are likely biased to show that the X360 in favorable light. Even with that being the case, I don't see how Sony could possibly have the performance advantage that they were portraying.
edit
A) Sony's Killzone graphics were CGI regardless of what you say or what Sony claims.
With launch about 10 months away you can bet your ass that they don't have final silicon or even beta silicon for either the Cell or the RSX yet; at best they are using alpha silicon. I'm sure that a game of this complexity wouldn't run that smoothly on dev kits, so realistically it can only be CGI.
B)Sony keeps saying that the video is "up to spec" meaning that the final game "should" look like this. The implication is obviously that while the character models are possibly correct, this isn't being rendered in real-time. Regardless of how people are spinning this, the game is not being run real-time or they would have said it in the presentation and done something similar to what they did with the Unreal 3 and Fight Night with a moving camera position.