I don't think so. There isn't likely to be many AMD stickers on the machine.

Nvidia really are speaking the truth of the matter, they are being perfectly honest although the question is probably....who asked them anyway.

I think that Nvidia most likely offered Sony a better GPU, but at a greater cost partially because of the GPU and partially because AMD agreed to deliver the whole thing on an SoC including the CPU and the buses, cutting costs massively and simplify their supply chain.

Nvidia probably envisioned a much more powerful machine for sony but ended up rejected on cost basis.

Nvidia have a reputation for demanding a good margin and Sony were almost certainly looking to pack as much punch but at a manageable price after being stung by the cost of PS3 hardware.