There is a lot more to it than R700 = Radeon 4000. Firstly, you can't compare the performance that a desktop PC card offers PC games, to what it might offer inside a console. The two cannot be compared or correlated in this manner. Further, this R700 refers to the class of the GPU; there could be further customization done by ATI for Nintendo's benefit (bandwidth, shaders, RAM). Similarly, you cannot equate a 3-core PowerPC to another 3-core solution and guess the performance. We don't know the architecture. We don't know how the chips talk to each other. Until we do (likely not until a dev studio such as Epic or id comments on the hardware) we should refrain from drawing conclusions on the longevity of this new platform.