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I have short-hand calc methods like James does that I can whip out to get rough estimates.  I think Bedard was above the supermargin in 2007 but not since he's been a Mariner (his walk rates are too high in 2009, although that's probably caused by the injury implosion in June/July).
The 2003 Mariner outfield defensive unit was supermarginal (I don't rate the supermargin for an individual fielder since no one fielder can create sub-marginal performance form the opposition, but a whole defensive unit (Pitchers, catchers, outfielders, infielders) can, in rare cases, do it).  The 2009 Mariner outfield was roughly as good as the 2003 outfield, so it's fair to guess that the '09 outfield defense was slightly supermarginal (which is why the whole team has such a stunning DER despite Betancourt/Cedeno playing short most of the year and Lopez being only average-ish at second).  None of the Mariner bats were supermarginal this year, I don't think.  Ichiro, as good as he is, is typically scraping along the top of the standard performance range...you really have to whip out a 170 OPS+ or something silly like that to break into the game-changing dynamics.
Aardsma probably was not supermarginal either with his walk rate, and he was the best bullpen representative.
I plan to completely recalculate PCA with some enhancements this off-season.  It won't be the full fledged idea I've been working toward - time doesn't permit me to do all of what I want to...but it will address some of the flaws with the old system and provide concrete ratings for the last five years.