He's not a center.
The Selke Trophy has been awarded to a center for 10 consecutive seasons and 27 of the past 32 seasons because typically when you talk about forwards who play as many as 20 minutes per game, on the power play and on the penalty kill, and who are used in close situations (down a goal or up a goal) late in games, you're talking about centers.
Patrice Bergeron, Jonathan Toews and Anze Kopitar are the gold standard in the League today. Pavel Datsyuk won the Selke Trophy three consecutive seasons from 2007-09. Ryan Kesler, the Selke winner in 2010, still has a major impact all over the ice.
But Palat's impact all across the ice can't be denied either.