The thing that sets Stamkos apart from others is how he's adapted his game. Last year he was mostly getting goals from the top of that left circle with the one-timer on the powerplay. This year, he's scored something like 45 even-strength goals from all over the zone in all different manners.
Exactly. I tried to write about it earlier in the topic, but you put it better. Stamkos even had a goalless period when the opponents constantly didn't let him shoot from the circle. The day he began searching for other scoring spots, and shoot from elsewhere as well, the day he became the best scorer in the league again.

He completely changed his style, and very fast at that. Last year an expert in a game studio talked about that topic (Stamkos only scoring from the point), and the next thing we knew he shot from elsewhere too and began scoring again. I'd like to think he listened to that expert! Can't remember which game this was or who the expert was.
Calgary sinks. They won't make it to the playoffs, and with a roster they have, I don't think they'd deserve it.

I think a team that "has to" play St. Louis in the playoffs could make a surprise. When it comes to the big games, St. Louis' offensive play will ultimately prove too weak. They have an awesome, awesome team right now to keep their own net empty, but they can't score too much to the other end, either. Same goes for Nashville if Rinne is playing like a demi-god. But I can't see these teams winning the cup right now. They both could use a healthy Rick Nash. Just imagine, a healthy Andy McDonald siding with Rick Nash and Backes/Perron/Steen/Oshie, and the three others forming the second line. If St. Louis grabbed Nash next summer, they'd be a scary team as hell! They have awesome goalies and blue line as they are.
So, my cup favorite isn't St. Louis or Nashville. Nashville could be if Rinne played well and they could actually score on more regular basis, but at the moment, it is not so. So who is it? I think the Rangers could be a good bet at the moment. Solid team all over the ice; no goaltending, D or scoring troubles. Nearly every other cup contender team is suffering from some key player injuries at least for now.