Indeed, everything I've seen recently points to FF as having a slim lead over Chrome. It's just that for many of us, the last time we used FF was right before we switched to Chrome, so our perspective is frozen at that point.

This is my current Chrome memory usage

  Browser	                                    	       
  Google Chrome 25.0.1364.97

  Memory 
  Private      Shared  Total
  3,950,040k 12,805k 3,962,845k

  Virtual memory
  Private      Mapped
  4,728,936 k 937,320 k

This is with 18 tabs and ~20 extensions. Chrome isn't really light on memory usage anymore. 1.5GB of that is split between Google Reader and the Spotify web player though, anything Javascript heavy seems to use an absurd amount of RAM after it's been left open for a few days.

I am back to using FF for my everyday browsing as Chrome takes about 2x as much ram with my 50 tabs (casual observations, not benchmarked).