I had to do some web scraping for an application that I recently wrote and only when my app's performance started to rely on the results provided by the various search engines out there, I started to fully appreciate how good Google is. It's just no comparison; in edge cases, misspelled and unconventional searches (where it really matters) Google completely creams the competition.
While Bing came closest to providing search results as accurate as Googles it still wasn't at any comparable level, so all in all I agree with your point.
I'm pretty sure it was the arguably-wrong nitpick combined with crappy grammar that sunk it.
I try not to down-vote just for differing opinions from my own, although my emotions do get the better of me occasionally. However, if I see bad grammar it's just automatic.
Welcome to Hacker News! :-) FYI, comments like that tend to get downvoted swiftly on Hacker News. You may want to read the guidelines if you haven't already.
My first forays on HN were marked by similar mystery downvotes, and I still get them from time to time. Don't worry about it. HNers are just a fairly fickle bunch, is all.