I think people get caught up in what it's supposed to be instead of what it is. It sounds good to me, and that's really all that matters.
No, it has to sound like a beloved old pedal, and its success will be measured solely by how close it gets to that sound. Obviously it can't be exactly right, because that would require an exact duplicate of the board and components of the exact same vintage within a casing of the exact dimensions with exactly the same printing on it. But if you're happy with it, well, I guess you're entitled to your own opinion.