How definitive is the serial number check for a PS4 controller (Fix & Replace | PlayStation Support | Sony PlayStation)? If my serial number doesn't come up, is that a sure thing it's fake. I have one I suspect is fake, but I'm not seeing any of the tell tale signs and it performs pretty well. Just for reference, it is exactly like this one (PlayStation 4 - 20th Anniversary Edition (DualShock 4) - YouTube). The serial for the one in the video also doesn't come up on the link above.