Because human vision has very little in common with camera vision and is a far more advanced sensor, on a far more advanced platform (ability to scan and pivot etc), with a lot more compute available to it.
try matching a cat's eye on those metrics. and it is much simpler that human one.
a cursory glance did not find studies on cat peripheral vision, but would assume it's worse than human if only because they rely more on audio
But the human brain can process the semantics of what the eye sees much better than current computers can process the semantics of the camera data. The camera may be able to see more than the eye, but unless it understands what it sees, it'll be inferior.
Thus Tesla spontaneously activating its windshield wipers to "remove something obstructing the view" (happens to my Tesla 3 as well), whereas the human brain knows that there's no need to do that.
Same for Tesla braking hard when it encountered an island in the road between lanes without clear road markings, whereas the human driver (me) could easily determine what it was and navigate around it.