Okay,
I do graphics for a living. Some of the graphics I've posted aren't reflective of my professional work because I view Star Wars as a hobby and I'm not making money out of it. Plus, I just want to make the point with pictures and move on.
Like Cantina Dude, I use Adobe Illustrator. I also use Photoshop.
Gino, I think your comparison was both correct and flawed. So let me provide some assistance.
For the record, I do not know Cantina Dude or Gino, and I am not taking sides here. I am only sharing observations. No malice is intended towards either side, nor am I passing judgement on anyone.
The above is Cantina Dude's image superimposed over Gino's. I reprocessed the graphic so the lines are green instead of black.
Now as Cantina had said, after drawing the left box, he flipped it over to the right (there is a "Mirror" feature in Adobe Illustrator). And I have verified this. I have superimposed his artwork of the left box over the right and they are a match.
Therefore, the right boxes of Cantina's and Gino's photograph will not line up and give you a positive match.
So let's focus on the left box.
The lines are very close. They overlay just about perfectly. Even the perspective is an extremely close match.
So this looks in favor of GINO.
Now to be fair to Cantina Dude, here is the same illustration overlaying his pencil drawing:
Again, very, very close. There is always the possibility, of course, that it is coincidence. There are various people who own accurate belt boxes and can photograph them. The distance between buttons and their spatial proportions are not unknown to the community.
Conclusion
So what is the liklihood that he printed the photo out, then placed a piece of paper over it, did a rough pencil tracing, and then used Adobe Illustrator on top of his own rough tracing? If this is the case, this is his artwork.
I have the ability to trace over any photograph, print it out, the lay a blank sheet of paper over the printout, and do a rough pencil drawing, and then tell the world what a great eye I have for Vader that I can draw this out of my head. But who would want to go through that level of effort? If such a person found reward in the recognition of his illustrations and thrived on such deception, then at the end of the day they have to struggle with their own inward emptiness as a human being.
Gino, whatever you decide, do not let this discourage you from being the magnificent and generous human being you are in sharing knowledge with others. All of us know what we know because someone didn't hoarde information.
I believe that if indeed Gino's photos were used that as a courtesy some acknowledgement should be given. This is not a legal requirement. Some might say, "Why? It's an educational reference?" In the academic world, if you write an educational paper or book and if you do not cite your references, people who find out will cry foul, and an accusation of plagiarism is determental in academic circles.
Some food for thought.