This total is short. The average road game for each team averaged more than six goals per game. 
Neither team has stellar goaltending. Vancouver has really pumped up its offense. The Canucks own the league's fourth best power play percentage and rank in the top 8 in scoring. The Over has cashed in nine of Vancouver's last 11 games. Minnesota's defense is down this season. 
The Wild, though, have averaged 3.6 goals during their past 21 games. 
So it's totally reasonable to expect at least six goals in this matchup.