Nvidia with their magical X86 CPUs. Oh wait, the contract happened because AMD was the only vendor that could provide an X86 CPU and decent dGPU. The only other company which was in the running is Intel. Plus Nvidia annoyed Nvidia over the original Xbox and ATI designed the first unified shader GPU for the XBox 360. It gets even worse when hardware based image reconstruction methods first happened on the AMD powered consoles, ie, Checkerboard rendering. Shows you how much PCMR is influenced by marketing even more than the console crowd!
This is worth watching too regarding Nintendo and the issues they will have with new hardware and the use of ARM64 and Nvidia.