wow.
He does have a point, you have to admit.
His explains pretty much everything in the OP without having to go to 926 other sites. In my opinion, if someone else shows you up in making a topic because you don't do very well at explaining, or you just have 3/4 lines of text, and shows your topic up by making theirs look all nice and organized like this, you should lock yours.
If what I just said makes no sense after reading, I'm half asleep, so here's a way simpler way to look at it:
Guy A makes a topic with 3/4 lines of text, sufficient info.
Guy B makes the same topic, and provides / adds more than sufficient info and ways of preventing / other things needed
Guy A should probably lock theirs, just so people will see the more 'informed' topic and possibly clear up any questions they might get from looking at Guy A's topic.