Toews has been a victim of an incredible amount of Canadian penalties forcing checkers like Chipchura/Downie
et al into more ice time than the offensively geared players on the Canadian squad.
While I haven't seen TOI stats available, just from watching the games you know that Toews, Pouliot, and Cogliano were all stuck on the bench for a good part of the game since they aren't solid PKers; you try creating offense with not entirely offensively gifted linemates in 13 minutes a game. I would say that Bobby Ryan was much more disappointing in this tourney.
However, downplaying Kessel's achievements in this tournament is beyond unbelievable. While it's true that he probably is not the most well-liked guy on the ice nor is he the most defensively adept, but his talent was obvious from the get go (except to Pierre "Kessel can't set up his teammates" McGuire) and was the best forward in the tournament that I watched(warning: my first taste of Malkin was tonight).
No Phil Kessel won't be Sidney Crosby, but neither will 99% of the NHL. But he'll be an incredibly talented offensive threat for years to come. That is, if he can rid himself of all big-head syndrome talk that's following him around.
Addendum: Calling Crosby over-rated is just as moronic as saying Kessel is such. Yes, top twenty in scoring in the NHL at the age of 18 and not much help offensively (or even defensively) speaking from the rest of his team.