Only watched Sweden games so far, but here's my view:
Markström has been brilliant, must be a candidate for player of the tourny so far (will be extremely interesting if he can stay calm in the semis/finals or if he'll start losing it all and begin to dive). Outstanding performances so far.
Andre Petersson is the one who's surprised me the most. I didn't even believe he had the potential to reach NHL.. But he's been the key player offensively for Sweden. Great wrist shot and nice dekes.
Paajarvi-Svensson has huge potential and shows it at times, but at times you don't notice him at all. When he wants, he dominates.
Larsson has actually played a lot sloppier than I thought, missed a lot of simple passes... still looking good though.
Worst player/biggest disappointment has to be Rundblad. What's happened? Misses 90% of the passes, often leading to breakaways and shows no strength or speed. Loses the puck at worst possible time etc.. Should be benched imo.