While it's not only due to this, the main issue in the past 5-6 weeks is the number of errors/mistakes. Lot of turn-overs and giveaways, which can be due to nerves, we've seen it happen in important games, but that wouldn't be the case now. Confidence is another factor that plays in and while it's been bit of an issue in recent months, I still think there is something else more important..
So it really boils down to the focus, if you are not fully focused, you will be punished, especially against better teams, as we've seen. Both Florida and Toronto got really potent offense, Canes, Pens and Bruins are not bad either in that department. Our trademark during these two cup runs was the tight defense, how we could hold onto a lead etc. Playoffs tend to be much more tight and less of the gung-ho offense that we see during the regular season.
I'm sure they are aware that they can't play like this in the playoffs or they will be out quick, I still think we will see a clear difference when the playoffs starts, so not overly worried, but guess time will tell.