Simple, and already mentioned...the "best" tactic is the one that fits the players available. If you have expert dribblers, passers, and general one-on-one ball handlers, the passing/possession game can frustrate your opponents and make them look silly, and always sending the ball long is a waste of their natural abilities. If on the other hand you have a ton of speed up top, heck, send the ball long and let them outrun the defense; playing short passes all the time would be a waste of THEIR natural talents.
There is no one "right" system, style, or formation; good coaches just pick the ones that play to their players' strengths and minimize their weaknesses.
