Mar. 16—The 76ers are scary good when Joel Embiid and James Harden are at their best. The Sixers aren’t afraid of the work involved in a comeback. And even still, they must do a better job of handling the ball. These three things stood out in Wednesday night’s 118-109 victory over the Cleveland Cavaliers at the Rocket Mortgage Field-House. Harden and Embiid duo Embiid was his normal dominant…