Autoland systems and humans have different limitations. Humans are limited by visibility, because we look out the window and control the final parts of the land

Autoland systems and humans have different limitations. Humans are limited by visibility, because we look out the window and control the final parts of the landing by what we see. The autopilot is limited by wind restrictions, because the control input rates of an airport are limited. That limitation is there because the sensor inputs aren't as good as you think. Looking out the window reacts much faster to wind gusts than receiving a radio signal to determine runway line-up. If you want to have a computer execute a full autoland in varying and gusting crosswind you'll probably need it to use cameras and computer vision, but then it becomes limited by the same visibility issues humans have.