Indeed. Back in 1999 the AMD K7 was a full 3 times faster than Intel on microbenchmarks measuring the performance of ROR/ROL instructions, because the throughpu

Indeed. Back in 1999 the AMD K7 was a full 3 times faster than Intel on microbenchmarks measuring the performance of ROR/ROL instructions, because the throughput per clock of these rotate instructions was exactly 3 times higher than on Intel. Obviously this did not mean that AMD was 3 times faster than Intel. Picking 1 or 2 random microbenchmarks like the blog post author did is not useful to categorize overall performance across all real-world workloads. If he had picked different ones, they might have shown AMD twice faster than Intel.