Every successful team in the National Hockey League needs depth- it's basically required in order to win the Stanley Cup. Just look at the Los Angeles Kings from last season, and the Boston Bruins from the year before. Both teams had household names on their teams, but they also had solid input from all four forward lines, all six defenseman, and their respective goaltenders. The Devils are a similar team. While they have superstar winger Ilya Kovalchuk, they can also count on other players, like Patrik Elias, Adam Henrique, David Clarkson, and Travis Zajac to contribute offensively as well. They also have a third line that always comes up big in important situations (consisting of Stephen Gionta, Ryan Carter, and Steve Bernier), which plays a huge role in the team's success.
Another strongpoint for the Devils this season is their defense. Now, the days of Scott Stevens, Scott Niedermayer, and Ken Daneyko are long gone for the Devils, but they still find a way to get the job done defensively, even with smaller names on the blue line nowadays. Andy Greene has been their best defenseman so far this season, but every Devils defenseman this season has been solid. The Devils have eight NHL-level defenseman, and all of them have looked good thus far. The Devils defense has been so stellar, that Henrik Tallinder, who is one of the more experienced and handsomely-paid defensemen on the team, is having trouble getting into the lineup. That's a good problem for any team to have.
While the Devils are getting significant contributions from every player, perhaps the biggest contributions have come from their goaltenders. At 40 and 39 years old respectively, Martin Brodeur and Johan Hedberg are easily the oldest goaltending duo in the NHL, but they are certainly proving this season that age is just a number. Brodeur, who is arguably the greatest goaltender in the history of the sport and in his 20th season in the NHL (all with the Devils), is proving that he can still be be an elite goalie in the NHL. He's been that good so far. And let's not forget about Johan Hedberg. He's one of the best backups in the league, and he still gives his team a chance to win whenever he's in goal for the Devils.
Even though many people picked against the Devils this season (again), it's looking like the Devils are going to have another strong season. When are people going to learn not to bet against the Devils?