Most of the excitement expressed earlier was in the potential of what could come with this door being opened, as it does open some new possibilities.
However, I noticed no real performance difference between, say, Chrome and IE10. In fact, there are still some technical issues going on with IE10, one of which that it hasn't quite yet sorted out it's indifference to Flash, even after the updates. Waterfox, however, is noticeably faster than either Chrome or IE10. Pages load much faster, and streaming is smoother. I'll be sticking with WF for a while!
But yes, I agree that a "full switch" 64bit system/application/internet environment is least taxed with web browsing, at least for now. Online gaming and HD streaming will be another matter, though...