Is it really finer graned? To me Windows MACLs and DACLs look pretty much equivalent to SeLinux's ACLs and type labels.

It's obviously possible to have a level 5 car operate on just cameras. A human driver can do it with two (or sometimes one) non-ideally positioned "cameras" and s few small mirrors. Of course there is a difference between "possible" and "practical with any current cor likely near-future technology", as to duplicate this would need a computer that can make a lot of inferences.