This issue was indirectly addressed before by Emile, and commented on specifically in a reply to the previous by jwhendy. But it's probably an important enough usability problem to warrant its own top-level comment.

Currently the parent should have at least +6 extra upvotes going by that second link, possibly more, assuming the same people didn't upvote both. (I rescinded my vote from before, and I am now upvoting this.)