Hmmm.....did he? I could be wrong and missed something but as I remember it he said one of 1, 2 or 8 was correct. I also remember him saying something to the effect of it not being multicore in the way we think of multicore which leads me to think more along the parallel processing line of thinking. Can you point to where he specifically said it was dual core? I very well could have missed it.
I'm paraphrasing, but he told us the CPU was a PPC chip. He told us it was a multi-core chip. He told us it was 1,2 or 8 core. And he said it was not 8 core. Logically that leaves only 2 cores!
Although there is a small possibility that he might have been talking about the XCore chip (or whatever X is) in one of those cases. Someone would need to check exactly what he said to be sure he wasn't.