Looking at the calls that led to power plays for the Leafs, there really wasn't anything that stood out as a soft call. The officials negated a Leafs power play with a soft roughing call on Wayne Simmonds early, which led to the Flames goal. They also managed to turn a 4-minute high sticking penalty into a 2 minute power play by giving
Michael Bunting the only roughing call in a scrum that involved 3 flames going after the Scarborough native. Don't forget the Toronto based review room allowing a goal to stand even though the puck crossed the line after the whistle. It may be in the rulebook, but I've personally never seen that rule applied. As for the power play in overtime, you are not allowed to hit an opponent in the face with your stick. Huberdeau made a mistake, and it cost his team the win.