The way to get clarification is to do exactly what you did: leave a comment. Users who are active† will likely respond, but you have to have some patience. If they are active and don't respond, consider leaving another message, perhaps explaining the problem differently.
You can also try to get the question more attention otherwise, by linking to it in chat and asking people there to help you understand the answer.
If you have enough reputation, you can add a bounty to the question to see if that will attract better answers or prompt the original answers' owners to update their answers. A bounty bumps a question back to the top of the front page, where it will get noticed just as much as a new question would.
Without the reputation to add a bounty though, you have to fall back on asking in a comment or a chat, and patience.
† You can see when a user was “Last Seen” by the site on their user profile; aramis was last here 17 hours ago — not long at all. They may have missed your comment, or may not want to update their answer.
In this case, because you were given bad advice (duplicates are always marked as duplicates, no matter why they were posted), I have added the bounty myself.
However, patience is still necessary — there is no way to ensure that clarification comes instantly, whether leaving a comment, adding a bounty, or even asking a new question.