Dragon Tiger Online is a game based entirely on chance. You have a 50:50 chance of winning each round, which means that the Dragon Tiger Cheat or Dragon Tiger Formula will not work if you play with a live dealer. That doesn't mean there aren't strategies to increase your chances of winning.
One will not dominate the other, just as the forces of yin and yang balance each other in the universe. The dragon symbolizes the yang forces of the universe. The tiger symbolizes the yin forces of the universe.