Caps lead the NHL in the most important team stat: Goals against.
Don't agree? Look up the last 6 Stanley cup winners and see where they ranked at the end of the regular season in goals against.
Disagree with what exactly? Scoring more\allowing less goals than opposition is the whole point of game.
GA - GF
2014-15 Chicago Blackhawks 2.27 (2)
2013-14 Los Angeles Kings 2.05 (1)
2012-13 Chicago Blackhawks 2.02 (1)
2011-12 Los Angeles Kings 2.07 (2)
2010-11 Boston Bruins 2.30 (2)
2009-10 Chicago Blackhawks 2.48 (5) - (3) 3.20
2008-09 Pittsburgh Penguins 2.84 (17) - (6) 3.15
2007-08 Detroit Red Wings (1)
2006-07 Anaheim Ducks 2.41 (7) - (8) 3.10
2005-06 Carolina Hurricanes 3.15 (19) - (3) 3.49
2003-04 Tampa Bay Lightning 2.34 (10) - (3) 2.99
2002-03 New Jersey Devils 2.02 (1)
2001-02 Detroit Red Wings 2.28 (3)
2000-01 Colorado Avalanche 2.34 (3)
1999-00 New Jersey Devils 2.48 (7) - (2) 3.06
1998-99 Dallas Stars 2.05 (1)
1997-98 Detroit Red Wings 2.39 (7) - (2) 3.05
1996-97 Detroit Red Wings 2.40 (2)
1995-96 Colorado Avalanche 2.93 (8) - (2) 3.98
1994-95 New Jersey Devils 2.52 (5)
1993-94 New York Rangers 2.75 (3)
1992-93 Montréal Canadiens 3.33 (7) - (9) 3.88
1991-92 Pittsburgh Penguins 3.85 (20) - (1) 4.29
1990-91 Pittsburgh Penguins 3.81 (18) - (2) 4.28
1989-90 Edmonton Oilers (9) 3.54 - (6) 3.94
1988-89 Calgary Flames (2) 2.83 - (2) 4.43
1987-88 Edmonton Oilers 3.60 (8) - (2) 4.54
* The only teams with lower more dominant rank than less dominant.