I read your notice stating that the NHL gave both pittsburg goalies the shutout. In fact this is incorrect, neither goalie has been accredited with a shut out as per NHL rules. In order 2 be accredited with the shut out both goalies would need to have played the full 60 min. In this case Johnson gets the win, and neither goalie gets the shutout.
The NHL has not given either goalie a shutout due to this rule.