Well part of the difference is that if you look at his ebay listings, Q does not give any credit to the original artist who created the work. He makes no contribution to the art whatsoever, he just churns out copies of other, more talented people's work and takes the credit (and money) for it. Although often unspoken, it is generally given that custom works are sold on the agreement that recasting will not take place. I will freely admit that I am biased in this regard, as Q ripped me off a couple of years ago. At the time he was in good standing on the board and the powers that be took his side (I was told that he was a cop and so couldn't possibly have ripped me off!?!). However, I believe I would still have the same opinion if it was any other person.
As for recasts such as the Medicom head, yes, it is recasting to a (fairly large!) extent, and I agree that the morality of it becomes very murky at times, but it has been fully aknowledged that it is a recast of a modified Medicom head. I don't know much about the Indy head, but presumably a lot of work went into shrinking the head down to the correct size and adapting the neck, and no claims of original artistry of the sculpt were made. In both these cases the product being offered is/was in limited quantities, and is something that is not being offered by the original, or any another company.
Murky territory, I think, but the internet is a confusing place sometimes when it comes to deciding on moral and legal responsibility.
