I have seen that line of thinking from a lot of Swedes, and I don't really agree with it. Sweden would have needed him to be more for what? They played an amazing tournament, and that success wasn't built on star players, it was all about rational decision making and team defense. There was just no way through either Sweden or the US, no matter who the star players were - including guys like RNH or Yakupov. I'd agree in so far as to say that his offensive game wasn't perfectly suited for the way the Swedes played, but he made his impact by sticking to the team's game plan and focussing on sound two-way play.
The Swedes as a team really shouldn't be disappointed, with the situation they were in to start this tournament, they pulled of an amazing feat to make it to the final. They made that as close as it could be, with all the goals on either side coming of bounces. Nothing but credit to the entire team from me.