So true there is way more to the browser than the java script engine. So I ran ye old browser showdown on my comp (Fresh everything). Firefox and Chrome are very similar in speed with Java benchmarks, but once you get into the "real-world" type benchmarks, Firefox was faster by a large margin and was almost 3x as fast as Chrome in some tests.

You can take a look at my results here:

https://www.dropbox.com/s/58doo8csebp9l62/Bench.pdf?dl=0

Each browser has it's strengths and weaknesses it seems, So I run all of them lol For my day to day tab filled behemoth I have to use Firefox, any other browser can't handle the ~80 tabs I have open at once.

In fact me and my roommate have on going challenges on how many tabs we can keep open and up times of the browsers/OS's (He is on Win7). During our battles we have tried tweaking some things and using odd browsers and such, but to be competitive with one another we have to each use Firefox cause it just has that much better memory management/stability.