Hola Leoni, es algo q lei en Neogaf, en el topic sobre tv's (luego pongo el link, aunque hay miles d posts es interesante leer los ultimos) i supongo q se referia a este update que puedes encontrar en rtings:

"Update 9/14/2016: We are now testing input lag in various resolutions, including 4k and HDR. We've retested all 2016 4k TVs that we bought so far. For testing 4k and HDR, we are using the Leo Bodnar tool chained into the HDFury Integral and the HDFury Linker to upscale to 4k and inject HDR metadata. These tools don't add any significant input lag to the measurements."

Parece ser q antes de este update el metodo usado no era el correcto.

Ps:Link a Neogaf NeoGAF