Comment by Dylan16807

They measure in a particular way that includes half a frame of unavoidable lag. There are reasons to do it that way, but it's not objectively the "right" way to do it.

Rtings basically gives you a number that represents average lag without screen tearing. If you measure at the top of your screen and/or tolerate tearing then the numbers get significantly smaller, and a lot of screens can in fact beat 1ms.