For what it's worth, I'm pretty sure that most of us/the HN crowd can't fairly do the bingiton challenge.
At least for me, it's really quite easy to tell them apart just based on subtleties. I.E. Not the quality of the content itself but just how its presented. And if there are ever images involved, it gets even easier because Google and Bing display them completely differently (and honestly I think Bing does a more elegant/"nicer" job of it)