Once again, the Caps have only one tiny thing to play for today -- eventual home-ice advantage in the 3rd round over Toronto IF they happen to be the ones advancing out of the Atlantic. That's it.
NJ on the other hand, probably wants to win to avoid 5th place and being moved to the Atlantic for the playoffs. (Philly, a point behind them, has a non-playoff team tonight.) I wouldn't want to have to beat two of Tampa/Boston/Toronto to get to round 3. On the other hand, if Philly finishes 4th they open against Pittsburgh, who has been tough on them this year.
Interestingly, not only is the Metro tightly bunched for the season, but ALL FIVE TEAMS have played very well over the last 10 games. The standings have hardly changed. In a way, it doesn't matter who plays who -- any series might be pretty close to 50/50.