If two guys are damaging each other on the ground, the one on top isn't carrying the other guy's weight.
All things being equal, the guy on top is gonna win 8 out of ten times, because he won't get tired as fast.
This and the guy on top has the control, while the one on the bottom is being kept there against his will. When the GNP is weak and little action occurs through most of the match that sucks, but unless a sub comes from the bottom, top guy is the winner.
Finding Your Way Through the Cloudy Mountains
RNP-AR Precision GPS-FMS Approach to Queenstown - NZ
You don't have a soul. You are a soul. You have a body.