The Kings have pretty big forwards that manhandle our D-men behind the net and out in front of the goal which no other team in the West does. Boston had size and skill and beat us. Once the Hawks lost their size in Byfuglien, Eager, and Ladd we finally beat them. We lose to solid teams that have major size advantage on us.
Yeah I mean we had sustained several major losses due to injury by the end of all of those series (and in two of them, before the beginning) so you can't say a healthy Canucks team wouldn't have fared differently.
But yes obviously big teams that grind it out are capable of giving the Canucks trouble. Honestly I think the problem is more that we can't fight through the obstruction and the big defenses than it is that big forwards dominate us down low.
In our own zone we are more likely to get taken apart by skill guys like Patrick Sharp, Kane, Toews, Keith, Marchand, Bergeron, Ryder, Peverly than we are to be dominated by big guys like Byfuglien, Lucic, etc.. although when you've got guys like Dustin Brown and Anze Kopitar who can do both that's troublesome.