BROOKLYN — The Nets’ blockbuster move to acquire Kevin Garnett, Paul Pierce and Jason Terry stole headlines, but it says here the bench unit will be the steal of the summer at the season’s conclusion. Garnett is the team’s elder statesman, ranking sixth all-time with 47,801 minutes played over 19 seasons. Paul Pierce, Garnett’s counterpart, will be 36 when the season starts. However, Brooklyn boasts the league’s only bench unit with four double-digit scorers and one double-digit rebounder from last season. [Read