That's a strong assumption to make, that a human could have done better. It was dark, night, nowhere near a normal crosswalk, and not where I as a driver would normally expect a person to be. I think it would have been hard for even the most alert driver to not hit this person in this circumstance.
The point wasn't quite "what would human do?" but "computer just drives straight over people, BAN KILLER ROBOTS NOW!!!" Public perception and its backlash is not always commensurate with the technical side.