Intel or AMD?
For me, I believe that Intel is more emulation-friendly than AMD. Why did I say that? Because, I know that Intel developed the x86 instruction set architectures (Yes, thanks to AMD, who helped designing the x86 instruction set architectures with Intel.) and the extensions, such as IA-32 and x86-64, and when it comes to playing the games for the emulation, Intel is my better choice.
Shadow
You answered your own question within your question.
Robert J
No fundamental difference.
Machine makers may or may not enable virtualisation features in a PC/laptop BIOS, and that can affect compatibility; it's often disabled in lower cost, non "business grade" laptops from some manufacturers.
And ps. AMD developed the AMD64 instruction set in direct competition with Intel IA64 - but guess which you are using... (Clue - it's not the Intel one).
DeMoNsLaYeR575
ok so
1. Video game console emulation DOES NOT utilize the special emulation hardware on the CPU.
2. ALL x86 CPUs utilize the same X86 instruction set, that has been standard for over a decade. Specific CPUs have improvements made but the base instruction set stays the same.