The defensive tactics suffer from two factors, I think. First, the offense can adapt to the defense and second, the penalty for playing a specialized defense is so high that when the offense adapts, the defense is at a major disadvantage. I think that for teams in higher divisions with more well-rounded squads, playing a specialized defense is very risky. Still, for the majority of teams in BB I think the tactics are all still useful, depending on opponent.
Once I scored a basket that still makes me laugh.