NASA Images Offer Views of Apollo Landing Sites

Yesterday NASA published images of the Apollo landing sites on the Moon.
Apart from the „First Moon Landing“ (20 July 1969) I don’t doubt that USA sent spacecrafts on the Moon, but how comes NASA offers images on the landing sites in such bad quality?
They took those images from a 21km height, which is about fifteen times closer than the images taken from satellites for Earth maps.

I guess that the Lunar Rover is at least as big as a passenger car.
Knowing the precision of the astronauts photo equipment and the quality of their pictures from the Moon, I am a little confused of why on an Earth satellite photo (+/-320 km distance) I can see cars, road marking lines and bushes but cannot see the Lunar Rover on the Moon, photographed from 21 km distance.

See the difference for yourself.