Confused, are you mixing the two up? The original is way sharper and less red than their version. Or is there something about it that indicates it was oversharpened despite that?

Also note that there is a resizing (downwards, not upwards) I had to do in Photoshop to make them the same dimensions, since Facebook both lowers the quality and the dimensions, so it was impossible to match up the pixels without that. If it did any sharpening along with that I have no idea, but I don't notice any changes on Photoshop's side.