I'm not so sure I agree with Ming Thein. For me, handholding the d800/E is much easier to get as sharp or sharper images than from the D7000 under any conditions.
One has to press and release the shutter button without moving the camera to get the best result. So the timing and how one releases the shutter button, is as important as the pressing action. I do not think the shutter button release is discussed often enough when talking about technique.
If I want very large prints critically sharp I'm not going to be handholding unless there is no other option. I cannot think of a camera that a tripod, when possible to use one, would not provide at least some minor photo acuity benefit when making large prints.
Smaller prints and computer based images can help hide issues and I think even more so with 36mp.