Besides, what does dual core say to you?
To me it says that they have kinda reached the speed limit per core with current technology, so to speed things up they instead give you two cpus in one. I personally welcome dual core, as it really improves multitasking which is one step closer to what amiga was with it's custom chipset.
The amiga was in a way a multicore system as well, just that each chip had a specific task to do.