The difference being that those copies are authorized by the copyright holder and this one is not. You're right in that that's an obvious counterargument. I do

The difference being that those copies are authorized by the copyright holder and this one is not. You're right in that that's an obvious counterargument. I don't know how it would play out in court. I don't wish to argue that my "this is a copy" argument is undefeatable, but I think it's sufficiently plausible that this is what the copyright holders will argue when it comes to trial.