As you mentioned, the question is legitimate. The asker's problem is that he/she doesn't understand the titles he/she encounters in the workplace, both within the organization and outside.
This can of course be confusing for a new graduate, or someone who hasn't come to the understanding that titles are either meaningless or apply only to a single organization.
Of course, we can only have so many "What does X title mean" questions before all the answers start to look the same. If you find exact duplicates, vote to close. But if the question has some differences and still adds value, then we should answer it.
One strategy I use when I find a possible duplicate that I'm not 100% sure about is this: I put the ball in the asker's court.
- Drop a link to the suspected duplicate as a comment
- Ask the asker to take a look at the answers posted in the other question.
- If none of those answers actually answer the asker's question, ask the asker to update the post with more details that clarify the differences between the two questions.