What you are probably missing is that your DoF table assumes a display size of 8x10 viewed at 10 inches by a person with 20/20 vision. If you change the display size (or viewing distance, or visual acuity of the viewer, or any combination of those factors) then you have changed the magnification factor between the sensor size and the display size and must also compensate by changing the acceptable Circle of Confusion used to calculate the Depth of Field for a particular focal length and aperture.
Understanding what DoF is and what it is not is important here.
In a way, depth-of-field is an illusion. There is only one plane of focus. Everything in front of or behind the point of focus is out of focus to one degree or another. What we call DoF is the area where things look, to our eyes, like they are in focus. This is based on the ability of the human eye to resolve certain minute differences at a particular distance. If the slightly out-of-focus blur is smaller than our eye's capability to resolve the detail then it appears to be in focus. When you magnify a portion of an image by making it larger or moving closer to it you allow your eye to see details that before were too close together to be seen by your eyes as separate pieces of the image. There is no magic barrier beyond which everything is equally blurry and inside of which everything is equally in focus!
Since things are gradually blurrier the further they are from the point of focus, as you gradually magnify the image the perceived depth of field gets narrower as the near and far points where your eyes can resolve fine details moves closer to the focal plane.
Viewing a 22MP image zoomed in at 100% on a 96ppi 23" HD (1920x1080) monitor is like looking at a portion of a 60"x40" print!