In a way, they are correct. The architecture of the SPUs makes it very hard to compile/run AI on them - easily anyway (anyone know if there is a general C/C++ compiler for the SPUs?).
But the game would have to process a huge amount of complex AI for this to be true. Only then would it soak up too much CPU on the main PS3 CPU (non-SPU), and result in a lack of cycles to drive the other processes (or control the SPUs).
...
So - it could very well be true, or it could be a load of BS. Only a technical developer for Ubisoft (someone actually working on the game) would really know.
Gesta Non Verba
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