When Paul Pierce  scores a season-low six points on 1-of-6 shooting and you still build a 30-point fourth quarter lead, you know you’re a pretty good team. The Boston Celtics , however, may be much, much more than just a pretty good team. They may be in the middle of a season that could better last season’s 66-win world championship run. The Celtics toyed with a Philadelphia 76ers  team that showed off six-year, $80 million free agent Elton Brand for the first time. He was of little use to the Sixers since Philly showed it was completely incapable of solving Boston’s swarming defense. The final result, Boston won, 102-78, improving to 15-2 and expanding their lead to an amazing six games in the Atlantic Division.