"Equally Good" is of course, a matter of opinion.
Sometimes I think a meme making the front page is somewhat analogous to a young actress trying to become a Hollywood star. All things being mostly equal, thousands will try, only dozens will succeed. Right place, right time, aligned planets, blue moon, Sagittarius in retrograde, etc., etc.
On the other hand, when you see an obvious turd on the front page, it's usually because someone has started a brawl in the comments.