攻撃 and 守備: attacking actions and individual defensive results
Compare attacks signaled to begin, a castle attack, few points conceded, and a stopped attack without turning a local defensive result into a match victory.
攻撃 (こうげき): a signal and a target
「選手たちは合図と同時に一斉に攻撃した。」 (“At the signal, the players all attacked at once.”) The athletes attacked together on a signal. Beginning an attack does not itself establish that they scored or won.
「物語の城は夜明け前に敵の攻撃を受けた。」 (“The castle in the story came under enemy attack before dawn.”) The target is a castle in a story. It is not a continuation of the separate sports example.
守備 (しゅび): few points conceded and a stopped attack
「このチームは守備が堅く、失点が少ない。」 (“This team has strong defense and allows few points.”) The team's strong defense and few conceded points are described as its state. Few is different from none, and neither supplies a match victory.
「後半は一人を守備に回して相手の攻撃を防いだ。」 (“In the second half, we moved one player to defense to stop the opponent's attack.”) The Japanese 防いだ reports that the attack was stopped. Keep the quoted to stop wording while retaining the Japanese sentence's individual defensive result rather than treating it as only a plan.
Separate a local action from the match outcome
攻撃 and 守備 contrast attacking and defending actions or roles. An attack, a low-concession description, and a stopped attack do not all provide the same completion information.
Stopping one attack does not report the outcome of the entire match. These examples do not supply a defensive strategy, a shutout record, or an unstated final score.
Does a 守備 description with few points conceded mean a shutout or a match victory?
Show the answer and why
No. It reports few conceded points. The separate 防いだ example gives an individual attack being stopped, which also does not establish the match winner.