The native Safari made the new Retina machine look good: 13 hours and 18 minutes. Google’s Chrome, on the other hand, forced the laptop to tap out at 9 hours and 45 minutes.
Energy efficieny is important and often neglected attribute of an application. Even more so for application, which most of us would have open at any time.
I remember the times, when Chrome literally would make fan of my MacBook Air spin at full speed. Things improved since then, but I can see with a naked eye how Safari is much easier on the battery. Nevertheless, small (or not so small things) keep me on Chrome. ⌘-Shift-T to reopen last tab and rock solid developer tools to name a few.