Recommended use of each MMD setting?

[Southpaw]

As the title suggests, I'm curious as to the typical application of settings like 100% MMD in both horizontal and vertical, as well as 0%. My understanding is that 100% MMD Horizontal is used to match flicks to the horizontal edges of the screen, while 100% MMD Vertical is meant to match flicks to the vertical edges of the screen. 0% would be the same for both, being the match for tracking, or directly on the crosshair. Though I'm wondering, if I were to want to match my in game sens to have a similar feeling to my desktop DPI, what monitor match setting would best emulate that? 

[Merinda18]

100% mdh