I just scrolled through the document you linked. While there are additional images of the Galaxy in that document, the allegedly altered one is the only one I saw that compared them both powered on, closely side-by-side, and not at an angle.

The other images are much more difficult to compare. If you were to pick one image to alter in that document to 'make your case', they picked the most influential one. It is difficult for me to see that as accidental.