By Alek Arend Steve Kerr and the Golden State Warriors will have their hands full against the Boston Celtics in the NBA Finals. Marcus Smart is a big reason why. Smart’s abilities on the defensive end have been well-document. But that’s not all he’s capable of. Ahead of Game 1 of the NBA Finals, Kerr spoke at length about Smart’s basketball IQ, confidence and even called him the “guard version of Draymond Green.” That’s quite the compliment from one of the NBA’s top coaches. “I coached Marcus in the World Cup a few summers ago, along with Jayson (Tatum) and Jaylen (Brown) and Kemba (Walker). A…