In a truly repetitive situation, a single strategy will be most effective, however, in a situation where climates change, specifically against other teams, you need to be unpredictable.
In a game of order, the element of surprise is victorious, thus he who comes first, and acts first, loses. The one who acts through chaos, and is therefore unpredictable, then has the upper hand. Strategy defeats the strategy it is designed to, but chaos is much harder to plot against.