I am lifelong a gamer, have excellent vision, and routinely fail side-by-side tests comparing frame rates in excess of 60hz. Not everyone can perceive the difference. (One explanation is that some people may be able to essentially interpolate frames well enough that the information lost is not perceptible, in the same way that you might not be able to tell the difference between 144hz and 240hz).

That being the case, I'd much rather trade away frames in exchange for improved image quality, as I'm doing in this case.