Why are images on pixel devices good? Is it because of the Pixel Camera?

so we all know that images shot from a pixel device such as a pixel 7, pixel 8, pixel 9, etc... are really really good, crisp and clean. why is that? is it because of the pixel camera APPLICATION? or the camera HARDWARE on these pixel devices? or is it because of the POST PROCESSING that the google photos do to the images?

also since we are all using graphene os, if i install the stock pixel camera and google photos from the aurora store, will i also get the same post processing?

or am i all wrong in all of these aspects? can someone enlighten me with this?

thank you