
Allan Ryder provides the overview (as well as much of everything else herein):
PC is denominated in points in the standings (that is goals created/prevented are translated into points in the standings). A PC "point" is scaled to be 1/10th of a standings point and the PC points allocated to a team are therefore 10 x Points.When Ryder says "the story with goaltenders is different," he means that the scale is different from that used for skaters due to the obviously higher contribution - both good and bad - a goaltender makes. For example, sixteen of the top 17 PCs belonged to netminders in 2007-08 (Alex Ovechkin at 13th was the lone forward), and 28 goalies had PCs above 100 (13 skaters did). Oh, and by "all-star candidate," Ryder is referring to the year-end All-Star Team, not the midseason exhibition.
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As a rough rule of thumb it takes 100 or more PC points for a skater to be an all-star candidate (the story with goaltenders is different). At 80 points you would consider a skater to be a team star, 60 is a team leader, 40 is a solid contributor and 20 is a weak link. With a salary cap of $50 million (all figures U.S.) for the 2008 season, a rough guide to player value is $50,000 per annum per PC point (or $1,000,000 for every 20 PC points). This is based on a team spending the cap amount and targeting a 100 point season (a comfortable berth in the playoffs). [Ryder at p.4]
Got it? Good. So if we take player salaries and the number of days on the NHL roster into account (a minimum of 41 so that the trade deadline acquisitions could be included, and I adjusted Eric Fehr's days on the roster, which I believe to be incorrect), here's the cost per PC point of the 2007-08 Capitals:

Anyway, all that math and it tells us that in 2007-08 Ovechkin was a god, Mike Green was a ridiculous value and Michael Nylander didn't quite earn his $4,875,000 cap hit (or $5.5 million salary). You didn't need a weatherman to tell which way the wind blows there, did you?
But there's more in there. Jeff Schultz was both a "team leader" and a great value (as I've noted before). Tomas Fleischmann may have been cheap, but considering that he only contributed 22.1 pro-rated PCs, he was most definitely a "weak link." John Erskine cost next-to-nothing but still couldn't provide any real value (14.7 PCs, pro-rated). Brian Pothier was making a huge contribution and on pace to be a real value (a whopping 80.8 PCs, pro-rated), before his season and career were derailed. And so on.
Point being, for a team to have a successful regular season in a salary-capped League, there have to be a decent number of "values" (the Greens, Schultzes, etc.) and a minimal amount of "wasted" spending (pricey veterans that get hurt or underperforming players making Matt Pettinger/Steve Eminger money) up and down the roster, but you knew that.
With Ovechkin, Semin, Green and Brooks Laich all getting big pay raises for 2008-09, it's unlikely that any of that group will still be great bargains (though obviously still invaluable contributors), making it all the more critical that the club's higher-paid players stay healthy and that lower-priced contributors continue to be just that. Now's the time to step up, Eric Fehr.