I don't post very often, but I must confess I am a little confused as to what the argument/question here is. Are we trying to say:
A.) The Capitals aren't very good - I would probably disagree with this, or at least say this argument is based on a fictional standard (i.e not how the rest of the league is actually performing). Yes, there are threats in the East. If Tampa can survive a round or two and get healthier, they are dangerous. Lundqvist can make any series interesting. Philly is hot and cold. Pittsburgh is on a legitimate tear. The Capitals are 10-5-2 against those teams. They look even better if you add in Boston and Detroit (albeit slightly worse if you add in FL). They also have the best record in the league and the best goal differential. I also think they played reasonably well in the "biggest" two games they have played recently (Philly and NYI). There are concerns, but of course there are - it's the NHL playoffs in the salary cap era. I also get that a "pretty good team" seems like a disappointment compared to the "juggernaut" rating a lot were ascribing earlier in the year - but I don't necessarily see how this adds up to the Caps being a bad team.
B.) Winning the Stanley Cup is hard - Of course it is. Things are not going to be easy for them. It's not easy for any team winning the Stanley Cup. I know it would be easier on the hearts to see a 2012 Kings style victory - but the majority of SC victories in this era have been 2011-Bruins style.
C.) The Capitals won't be able to adapt/improve come playoff time - I guess I would ask what you mean by adapt/improve. I don't think there's an offensive switch that they can flip to score 4 goals a game (which again I think is based on a false premise that this is something that teams are doing). I trust Holtby to be sharp and the mental mistakes (think goals 1 & 2 last night) to be limited - but I get that there's no guarantee. I also think that the 7 game format favors them in some respects. If it's Philly - I would bet they bring their heavy game and consistently target Ghost (among others). Ditto Letang for Pittsburgh. So in conclusion - while I don't buy the idea that they are magically going to switch on juggernaut mode - I do think there are things they will do to be more effective when the prize is on the line.
D.) Waiting for the Playoffs as a Capitals fan who is conditioned to expect the worst, but is afraid some ray of hope is getting through due to the team's success this year, is excruciating - Agreed.
End long post.