Interesting... I wish he would have addressed the Karma drifting. In that I would have thought he would have addressed it, like saying he had done multiple calibrations or something to try to resolve it. If any of my drones drifted that much and I tried everything, it'd be on its way back to the manufacturer...
When I saw one first-hand at my local BestBuy, I was amazed just how large it was. After seeing/watching all sorts of reviews the Karma isn't going to stop GoPros downward slide of its stock price... The Karma is just so out-classed at this time in "Drone" technology...