Does a 2 core PPC processor do more then an 8 core x64 Processor?
Unlikely. However, since the only hope you have of running an AmigaOS offshoot directly on such a processor is AROS, it isn't really relevant here, is it? Even then, is AROS multicore capable? (I honestly don't know, not having kept up with it). This machine is aimed at running OS4, which the last time I checked was compiled for PPC. Given the historical design of AmigaOS, it'll be interesting to see how OS4 scales to 2 cores, let alone 8.