@richard hutnik, multi platforms are in my opinion a bad way to judge the capabilities of two pieces of hardware, because it usually comes down to what the dev's prefer and what they are more comftorble with and the how knowledgeable with each. sabatour for instance does AA well on the ps3 and looked superior to the 360 vers in that aspect, one of the reasons being is that there was no AA for the 360, but that does not make the ps3 superior, either the devs didnt want to, or didnt know how to incorporate it. in the end it still is put on the devs and not the hardware itself.
@Rath it actually is a well thought out architecture and is perfect for gaming. as shown in U2 offloading the graphics too the SPU's is very efficient, and still able to process AI and Collision effectively. the only problem with the architecture is that the SPU's must constantly be fed with data, so its up to the devs to keep the workload balanced effectively.
one of my sources for my reasearch paper is this article
http://www.blachford.info/computer/Cell/Cell0_v2.html
his conclusion sums it up nicely.