What does 2 Samuel 23:21 mean?

He also killed a huge Egyptian. The Egyptian had a spear, but Benaiah only had a club. He snatched the spear from the Egyptian's hand and killed him with his own weapon. 2 Samuel 23:21 - Modern Text Bible

(Benaiah's bravery is shown by how he defeated a much better-armed opponent, turning the enemy's weapon against him.)