That isn't the discussion. In fact, the award mentioned in the OP is a regular season award.
How many games did Downey play in the 2008 playoffs? Same answer as yours.
How many games did DMac play during the playoffs in his cup-winning seasons(outside of 08)? In 08 Drake played, and DMac played during the earlier cups.
No one here is suggesting the Wings carry someone with as much skill as Downey. We want someone better, and there are better players available. Even if the player only played during the regular season, it would still be an upgrade especially if the player can be within 5 points of Miller (which Konopka and McCormick can) and add a dimension the Wings lack.
EDIT- The original point still holds. The Wings haven't won a cup recently without a rostered enforcer.