TBH, these numbers pale in comparison. I don't care if FF is a few instructions faster than Chrome. It's good competition. Chrome and IE both have multi-process capabilities which make the whole experience significantly better. FF has yet to catch up to that.
Multi-process architectures do not guarantee fluidity. In the case of more than 15 tabs, Firefox nightly is more responsive on my laptop than Chrome Canary. YMMV
What about IE being multi-process makes the experience with that browser better? Without specificity, this is like me saying X is better than Y because of some attribute of X that Y does not have.