Earlier quoted context omitted.
While I use Chrome as default, I too miss Firefox autocompletion. In Firefox, I would just start typing "Hacker News" and HN would popup as a first suggestion after first letter, probably based on usage frequency. The only way to get the same result in Chrome, is to start typing "news.ycombinator.com", which means you have to remember url, not the name. Chrome, will surely find by "Hacker News" too, but I will need t…
That might be why I prefer Chrome's. I usually type URLs, only fall back to typing titles if I don't remember the URL, and it really annoys me how often Firefox will take me to the wrong site unless I type a fairly large prefix of the URL. In Chrome I can just type ne..., while in Firefox I have to go all the way to news.y... before it'll give me the right completion.
However, even though I currently use Chrome as my primary browser, I think Firefox still gets this slightly better - I think it learned more quickly and accurately for me at least.