Google is not a website in and of itself -- it's simply a search engine which searchs the whole internet (or at least, most of it) for photos matching the terms you inputted.
That image you used for your "Siegfried is evolving" photo is indeed the photo that Silent Andromeda uploaded. I know you had no intention of plagiarism or anything of the sort, but there's no question that it's the image that he uploaded -- having found it on Google doesn't change that fact, because the source image is the one that was uploaded here to begin with.
If you want an example of what I mean, an image search for "Star Warfare" will bring this and this up. Google simply detected the images where I originally uploaded them (on TouchArcade and this wiki, respectively), and pulled them up as search results.