Dvorak was going to outskate Rielly?
I can't watch videos on NHL.com but the youtube shows that they were still toe-to-toe by the time the puck bounces off the boards.
Cute gif.
They are fairly close, but if you look at who reaches the face off dot first, it's Dvorak, but you could argue maybe it's close enough to say it's icing. So yes, he did outskate Rielly.
Only issue is that by the time either one gets to the face off dot the puck is in the back of the net. The puck hits Bernier's skate well before either player gets to the face off dot, negating the icing.
The correct call was made on the ice by the referee. It's not an icing, it's a goal.
Btw, even if it should have been an icing, it's still a horrific goal to allow. Icing or not, Bernier gave up a brutal goal.