AMD FSR 4 Upscaling Tested vs DLSS 3/4 - A Big Leap Forward - RDNA 4 Delivers

Just how good is AMD's FSR 4 upscaling and to what extent is Nvidia upscaling advantage mitigated or even nullified by the Radeon team's machine learning based technology? Let's just say that the Radeon team has delivered something very, very impressive here.