You are absolutely correct. Different equipment, chipsets, drivers, and even optimizations will result in a different performance standard. The important thing for any test environment to tackle is to ensure that all testing is exactly the same where a comparison from one solid-state drive to another can be drawn. For example, you will find higher 4k write performance scores from other websites because they optimize their CPU settings. We believe this specific optimization is too difficult for the common user and want to ensure that our scores reflect what they are able to achieve in their own testing. Simply put, our testing is the same result that can be achieved by any user after first installing their SSD. Hope this helps.

So what I mean to say: Even when there are differences of more than 10%, do they really say anything about this specific SSD or rather more about the SSD in this system? Especially the fact that the other benchmarks shows faster speeds for the 4k single threaded makes me think that there are way more factors not being reflected in these benchmarks and that the only thing really able to tell this apart would be involve many differently configured systems, possibly even chipsets.