X impression boost
What matters is sticking to the plan, delivering quality content, and, if possible, creating value by adding useful information.
speed: post a comment as fast as possible
relevancy: make that comment relevant to the topic of the OP
value: bring something that is not of zero value (no spam or nonsense)
performance of the original post: If the original post does not get people to read it, your comment will also have low impressions.