The Nokia Lumia 1020 camera is much more better tan the Nokia lumia 1520 camera but in general, Nokia Lumia 1520 is better device. The first shots are from Nokia lumia 1020.
Thanks for sharing the pictures taken with both devices. That is great, and I really like the flower picture with 3 different insects all on the same flower!
I agree that the camera on the 1020 is more capable than the 1520. But that is the only point where the 1520 is beaten. All around the 1520 is more capable and more future proof.
I must say that the tools with Lumia Camera 5 make up for the image Quality. It just gives you more ways to be creative. Not for the Zoom unfortunately. Also some PS editing can compensate the quality gap. Now bring the 1030 for the best of everything!