The resulting combined power is greater. Qigong, for example, builds conscience control over qi through internal balance of posture and concentration and external balance with the earth and air. The process is incremental. As one develops further, one grows in power and potential. Heightened power and potential leads to increased ease of balance with others and thus more power and potential.
Morality is important here.
Balancing with others may incur manipulating them to your purposes. Manipulation has both its dark and light sides. One should seek a balanced point between the dark and light sides of all situations in order to develop fully towards the Tao. The rules will prevent one from continuing past a certain level without being balanced. Balancing should occur in all areas internal and external, since a level of balance in one area affects that in the others.