Reader responses to this recent item, arguing that Bing was not yet closing the gap on Google.
1) A reader whose first name is Yong suggests this control-group test:
For reasons unknown, I've personally found that the results from the "Bing vs Google" services can sometimes differ markedly from the actual results presented by Bing and Google at their respective websites. The actual results themselves are also sometimes affected by whether you're logged in with your Windows Live or Google account, again for reasons unknown to me. It would be interesting if you could retry your experiment to see if you obtain different results, and post a follow-up if you do.
Interesting. Naturally I have tried a half-dozen searches just now with three tabs simultaneously open -- to Bing.com, Google.com, and Bing-vs-Google.com. So far I find that Bing-vs-Google.com "works." That is, its combined display shows the same results as the two separate sites. It doesn't mean there won't be variations - and I haven't spent time trying a bunch of exotic tests. But in a first pass no anomalies turned up.
2) Another reader, whose first name is Samuel, says if anything I under-emphasized the sophistication gap between Bing and Google:
Here's a huge difference in the two search engines. They both have auto-suggest -- the drop-downs that now appear as soon as you start typing, which are so great that we're now taking them completely for granted. But Google's actually goes a second level.
Try typing in "Roger Ebert" on both and you get roughly similar suggestions. However, right after "Roger Ebert," keep typing and Google will offer further suggestions -- and related suggestions. In this case in my screenshots, these are Roger Ebert's actual movie reviews. Bing just stops after "Roger Ebert". The mechanics allowing that show a far more sophisticated algorithm on Google's end.