Hey John.
In looking close, I really think the 2 main images are different and not exact copies of each other. For example, look at the tassels on the top of the fez hat, how they lay on each image (not the same), and the shading/highlights on the hat and face, the shape of the cuff links etc.
Then quad art looks more refined, to me. Look at the left hand, to the left of the word "On." On the quad, you see a bit of the skin of his wrist, and on the OS, it's all covered over, with gray.
Stuff like that....