Laviolette has been gone for a year and a half now, so with all due respect, I can't really blame him for that breakdown.
For what it's worth, there were distinct differences on that play to the Laviolette system. They were not playing man on man. No one was prematurely flying the zone. Harpur was playing the backside tied to the goal post. Finally, Niederreiter actually used Hynes' close support system against Johansen. He circled out of the slot, out towards the circle, and back high in the slot. Johansen didn't want to give up his territory by the other goal post, left Nino to maintain his lower close support position, and even though he was the one still playing defense, got victimized by a fantastic tape to tape pass by Necas.
Towards the end in the Laviolette system, the breakdowns were often in sorting and stacking, as well as a ridiculous amount of puck watching. Nobody was on the same page, it seemed. Time and again, two Preds would take the same guy, leaving a shooter wide open, and it was Rinne's fault for not making a superman save. Despite emphasis on being a speed team, the Preds often found themselves in terrible matchups as well, leaving, for instance, Ryan Ellis one on one with the other team's fastest or strongest player. Sorry, Jamie Benn is just going to ragdoll an undersized Ellis over and over. The offensive emphasis of flying the zone didn't help anything either. No question about that.