Could the Xbox Series S be MS entry into a Handheld Device

[Kyuu]

There is no 100% reliable way to determine a system's true capability. Personally, I let the real world results decide this (framerate, resolution, settings etc), but a lot people would automatically blame "optimization" when their platform of choice underperforms, and some would assume platform holders are paying or forcing 3rd party developers to not optimize for the rival platform lol.