In addition to all the cool stuff the top comment who responded to you said, I think this also fixes issue with flash syncing. That is to say, sometimes if you try pushing your shutter speed too high on a camera with the other kind of sensors, flashes that come from things like speedlights could start producing strips of darkness in your image because the sensor is capturing part of the image before the flashes go off, then part of it when the flashes are actively going off. My understanding is that a global sensor would allow you to shoot at higher shutter speeds with speed flashes as long as the device you’re using to sync them to the camera is also fast enough to handle that fast of a shutter speed.

I know very little about digital photography (analogue photographer here) so I could be completely wrong, but that’s what I’m inferring based on what I do know.