I mentioned it was running faster. In the short period of time I was playing with it this morning, I tested individual page load time on several websites, application start-up/initial page load time using the "Load the pages I had open last session" settings, and some simple responsiveness tests (loading up videos on youtube & etc.) on both Chrome and Firefox (individually, so that the system was in a relatively similar state for each trial.) Firefox seemed snappier when loading individual pages, started noticeably faster, and was generally more responsive than Chrome. Given, I'm not using Chrome Beta at the moment, so that could have something to do with it. But overall, it seems that Firefox has really gotten their game together.
As for memory usage, my main computer is a laptop with 8gb ram, 6 of which are always in use running 2-3 virtual machines. Memory footprint matters greatly to me and is the reason I switched off of Firefox in the first place. The old memory leak that made it take 700mb ram after 2-3 days of constant running wasn't cutting it for me. Chrome tends to hang in the 200s, though on occasion it also jumps up into the 500 range, and, when certain pages start acting up, it'll eat up to 1.2gb. Of course, I tend toward months of uptime and upwards of 30 tabs at any given time, so it's a bit expected.