The initial Engadget review said they were still testing the 2.3ghz configuration of the new Macbook Pro with Retina. Their revision is now live and I found this a bit weird. "The 2.3GHz model lasted an average of nine hours and 22 minutes -- a runtime so long we at first thought it was a fluke. After repeated runs, though, we kept turning up similar results." Anyone have this configuration (with 8gb, as thats the one I bought) that can verify these battery stats?