Keys to a comeback for PHI & WSH

Which team has the best chance to complete the comeback from a 3-1 series deficit??
Philadelphia
X-factor… Martin Biron
Biron has been pretty darn good so far in this series, but he’s gonna have to be better. He’ll have to have two more games like his performance in Game 5. If he falters one bit, I don’t think they’ll end up winning 3 straight and moving on.
Key to the comeback… Balanced scoring. Claude Giroux and Simon Gagne are the only ones with more than one goal; which isn’t a good thing. Guys like Richards, Carter, and Hartnell need to step up. Also, Briere and Lupul have been held scoreless in the series. If they are to win this series, Carter and Richards especially need to get things going, and the top 3 lines to need to contribute.
Will they complete the comeback?
This is tough. I picked the Flyers to win in seven, but I didn’t expect them to be in a 3-1 hole. Philly CAN win these last 2 games… but I don’t think they WILL. If the Flyers win today, Pittsburgh will be jacked up to play Game 7 at home. The Flyers won’t go down without a fight, though.

Washington
X-factor… Mike Green
Green had his best game of the series last night… and now he has to build off of it. He’s gonna have to be the man to lead Washington’s currently abysmal power play. He has 3 assists in this series, but like I said, he’s going to have to up his game (defensively and offensively) in Games 6 and 7 for the Caps to move on.
Key to the comeback… Power play. This is simple… the Caps’ man advantage must start finding a way to score. They’re 4/29 in the series, and were 0/7 last night. If they can keep it simple and just pelt Lundqvist with frozen rubber, they might be to get the ball rolling and win this in seven.
Will they complete the comeback?
The winner of Game 6 will win this series. If the Caps bring the series back to DC for a 7th game, they’re going to beat the Rangers. I think they have a good shot, as they finally seem confident offensively. But you know Lundqvist will be inspired on Sunday after a lackluster effort. CAN they do it? Definitely. WILL they do it? Uhhhh… I don't think so.

Which team has the BEST chance at completing the comeback?? The Capitals, because Game 7 would be at their own barn.