As far as I know, if you report a topic and the topic is moved to another board, the moderator must select the status (bad or good) manually. So, it's not that your report would be definitely marked as good. That depends on the moderators' decision.
That's a good report if you ask me. By reporting a thread to be moved, what you are saying is this thread doesn't belong in this sub. Please take a look at it and consider moving it to sub X. The fact alone that you are correct and the discussion doesn't belong there should be enough for your report to be marked as 'good'. Maybe you were wrong about the final destination, and that decision in on the moderator, but you were right about where it doesn't belong.