I thought MacKinnon was actually pretty bad. The break for the game-tying goal started as a direct result of a horrid turnover from him in the neutral zone. And it wasn't just him, a bunch of Avs were just barely getting it out of the zone and then weakly dumping it right to the Anaheim blueliners. The poor performance of the power play once the team went up 3-1 was also inexcusable.
Okay, negative part over...I get this team is banged up, sick, and full of rookies who are just plain worn out (though Jost and Kerfoot are getting a second wind of sorts at a very opportune time), so while blowing a 2-goal lead in the 3rd and then losing in OT is pretty gawdawful no matter how you cut it, but the fact remains if they win out they still control their own destiny with games against the two teams they're battling with for a spot.
Bernier was more than okay. I wouldn't call the third goal "horrendous," certainly not great when you're pinging a rebound that big right up the middle but that goal wouldn't have mattered had the Avs continued to press and gotten a couple more. Instead they once again sat on a lead and paid for it.