Actually, had you done a little research, you would know that Maltby for the past 2 seasons has become a 4th line 10-12 minutes a game player. Draper is still pivotal for face-offs and penalty killing but neither guy plays the same role he did 5 years ago.
Nice theory, but its Draper and Malty that called on to shut down Thornton, Iginla, etc.
The Wings tend to maintain the same lines against most opponents:
The fourth shuffles.
I suggest you try out the NHL.com Stats page. It's very nice in supporting a dialogue. I'll help you out in this one: Draper and Cleary led the Red Wings in SH TOI this season playing 2:43 and 2:21 minutes per game. Zetterberg played 2:09 minutes per game SH and Datsyuk 1:47. In reverse, TOI for PP per game was 4:35 for Zetterberg, 4:33 for Datsyuk, 2:39 for Cleary and 14 seconds for Draper. Total TOI per game was 22:04 for Zetterberg, 21:23 for Datsyuk, 17:23 for Dan Cleary and 15:37 for Kris Draper.
The Red Wings have the luxury of spreading time around when it comes to special teams because they carry more depth. But if Draper plays 15 minutes a game and Maltby 12, how can they be against Iginla and Thornton who play over 20 minutes? Hhmm. The number of goals a team gives up factors into this -- the Red Wings won the Jennings this season, so their defense and forwards did a good job holding leads as well as scoring goals.
Just for you, here are John Madden's stats: 19:26 total TOI per game, of which 3:35 is SH, 0:52 is PP.