I think there’s real value in that it lets you think or other candidate titles which I would have originally dismissed as too simplistic or too boring. I'm not always going to pick the top one, but some degree of confidence and guidance about what resonates with people is better than nothing!

Also there were a lot of other titles with far lower results than are visible in those screenshots.

I believe he's saying you didn't gather enough data, which was my first impression.

I have also done this for years (not for titles on HN though -- good one), it's just that isn't enough data to really tell.