To me, whether it has been 'shopped or not is immaterial. I enjoy it just as much, so why should I bother to care whether the version I'm seeing is the version the artist wanted to create? Perhaps this attitude is just the result of having looked for stuff like this for so long, and having had to stretch my imagination so many times to see what I wanted to see...
If it IS a photoshop, though, I certainly hope the touch-up artist keeps it up!