The reason I went with AMD all those years ago was that, at that time, they were better at the number crunching such as that needed for games.
Suspect that's changed a bit in the last 20 years !!
Intel's R&D expenditure has been increasing year on year since the mid 2000's, so AMD are somewhat dwarfed by Intel's might these days.
You also have to bear in mind that given Intel's dominance, the computer under the programmer's desk is likely to be Intel and therefore their code and compiler optimisations are likely to be weighted in favour of Intel.
The current generation of i5/i7 Intel chips are certainly nothing to be sniffed at.