"For these tests, we used quality upscaling at 1080p and 1440p. This means DLSS for Nvidia GPUs that support it, FSR for Radeon GPUs and GeForce GPUs without DLSS, and XeSS for Arc GPUs. Let's see how the B580 performs."
(from 2nd paragraf in raytracing performance)
Isn't this giving Intel the exact advantage that they probably was hoping for when they decided to go down in render resolution compared to AMD and Nvidia using same preset names?
Context: When AMD launched FSR, they followed Nvidia and used the same naming scheme and the same render resolutions for each of the upscaler presets (Quality, Balanced, Performance etc.).
Intel, however, uses different rendering resolutions for their one-to-one named upscaler presets. Meaning FSR and DLSS uses the same render resolution if both are set to Quality. However Intel's XeSS uses a lower render resolution at a preset also named Quality.
I suspect that Intel decided to "copy" only the naming of the upscaler presets, while using different render resolutions, specifically with the intent to mislead customers. By showing performance results that are higher with "on the surface" equivalent visuals.
I think you did it well in the HUB/Techspot video&article
https://www.techspot.com/review/2860-amd-fsr-31-versus-dlss/
Where you pointed out that "Quality vs. Quality vs. Quality" isn't an exact comparison. Even at the same preset level, the upscalers aren't equivalent in their visual output.
And I know you didn't do this to intentionally give any unfair advantage. I'm NOT accusing you of any fanboyism. I've followed for many years and know that those to claims are stupid, because all you great work is a testament to your dedication to help consumers.
BUT
I think, because of Intels deceptive behaviour, this is why reviewers/testers should BE WARY to show users results, the users might not fully understand or misinterpret. It is probably best to stick to native resolution testing, as upscalers are making you compare graphics/visuals that aren't one-to-one.
(If you feel the need to include upscaler performance, e.g. do to frequent requests, I think the best solution is to stick with an open source upscaler. That would sadly be only FSR. As Intel XeSS, as you know, changes how it works depending on if it's used on Intel or other vendors products. And DLSS is of course Nvidia lock'ed)