Yes, Ovechkin has heated up but he's mostly banging in 1-timers and picking up points on a white hot PP. Granted a PP with Ovi, Green, Bäckström, and Ribeiro is to be feared - but we take very few penalties, and playoff reffing will limit the amount of PPs even more. Add the fact that the Rangers are likely to dominate the 5v5 play, which would lead to taking even less penalties, and Washington's greatest strength couldn't be diminished more.
Brouwer - hot streak, and he is currently cooling down.
Riberio is a PP specialist, worst possession numbers on their entire team.
Erskine is a pylon.
Better depth? If their depth is Erat, Laich, and Johansson - that would make our depth Zuccarello, Hagelin, and Brassard. Not a big difference, and I'd take our group based on the fact that Zucc is the best player out of all 6.
D could be argued either way; Carlson is a terribly overrated D-man, but so is MDZ. Top to bottom our core is better than theirs even W/O Staal IMO.
Holtby is hot, good for him. But Hank can sustain such percentages for seasons while it is unlikely Holtby can keep this going for much longer.
Washington couldn't be more dissimilar to the Devils IMO. The Devils are a fantastic possession team, Washington are mediocre to bad. The Devils have a terrible PP, Washington lives and dies by theirs.
All in all, Rangers in 6.