You weren't asked to determine the origin of the images. You were asked to apply your method to them to determine whether they had been composited, as you claimed it would do.
Most of your 9/11 images are enlargements of a larger image. The enlargement is an important part of the provenance of each image. You applied your method to the entire specimen image. Here's what happens when I apply your method to an enlargement of a portion of this image:
View attachment 61685
Halos around every branch! Can you explain why the halos show up in an enlargement but not in the original? Can you explain why the branches now suddenly display the stair-step pattern you claimed in the 9/11 images were indicative of "masking?"