Firefox also seems slightly faster for me than Chrome (and Safari feels _a lot_ faster), but that's not enough to switch, since I'm so used to Chrome's sane UX and sync (and with a passphrase I'm pretty comfortable having that on Google's servers).
If you are on a Macbook using battery power I highly suggest using Safari due to it's power consumption profile, your battery will last way longer.
My latest benchmarks: https://www.dropbox.com/s/58doo8csebp9l62/Bench.pdf?dl=0