The door handles are probably different. You have to reach inside the handle in order to be able to open it. Being within three inches of the correct side of the handle means that you're touching it, or within a quarter of an inch. So you could be right, but there's practically no difference.

Still, I don't want to talk it up too much. They've done a good job thinking about how to make it work right (and the triangualtion thing works pretty darn well), but there are enough bugs in the system to make it irritating, IMO. There have been times where Mom has locked the door, realized she left something inside, reopened the door, then tried to lock it again, and it wouldn't relock until she restarted the car. Not handy.