Below I am offering a comparison of photos taken on default settings from the Lumia 1020 (5mp oversampled photo), 920 (regular 8.7mp photo), and iPhone 5 (8 mp photo?)
Lumia 1020
1020_1[1]
Lumia 920
920_1[1]
iPhone 5
photo
***********************************
Lumia 1020
1020_2[1]
Lumia 920
920_2[1]
iPhone 5
iPhone 5_2
***************************
Lumia 1020
1020_3[1]
Lumia 920
920_3[1]
*******************************
Lumia 1020
1020_4[1]
iPhone 5
photo(1)
*************
Lumia 1020
1020_5[1]
Lumia 920
920_5[1]
**************************
Lumia 1020
1020_6[1]
Lumia 920
920_6[1] by Arsenic17, on Flickr
iPhone 5
photo(2)
****************
Lumia 1020
1020_7[1]
iPhone 5
photo(3)
Lumia 1020
1020_1[1]
Lumia 920
920_1[1]
iPhone 5
photo
***********************************
Lumia 1020
1020_2[1]
Lumia 920
920_2[1]
iPhone 5
iPhone 5_2
***************************
Lumia 1020
1020_3[1]
Lumia 920
920_3[1]
*******************************
Lumia 1020
1020_4[1]
iPhone 5
photo(1)
*************
Lumia 1020
1020_5[1]
Lumia 920
920_5[1]
**************************
Lumia 1020
1020_6[1]
Lumia 920
920_6[1] by Arsenic17, on Flickr
iPhone 5
photo(2)
****************
Lumia 1020
1020_7[1]
iPhone 5
photo(3)