They didnt, otherwise they would show you eye view instead of third person impression of what its supposed to look like to the user.
Most likely it suffers the same shaky snap laggy tracking like every other AR setup.
Most likely it suffers the same shaky snap laggy tracking like every other AR setup.
I did see a tiny bit of judder in the footage that was supposed to be exactly what the person wearing the glasses would see, but it was hard to tell.