I don't want to overreact to the Sharks' last game, a 7-6 home loss to the Blues this past Saturday. But it's hard not to. Only the Sharks could score six goals - and lose in regulation. 
San Jose has 13 goals in its last three games and only one victory to show for that. It's because the Sharks have the worst defense in the NHL. They have permitted 3 or more goals in 15 of their 18 games this season. 
Colorado is giving up an average of 3.2 goals during its last four games. 
So it's not difficult envisioning each team giving up three goals apiece. That actually would be an improvement for the Sharks since they give up 3.9 goals per game. 
The Over is 11-2-1 the last 14 times these teams have played each other in San Jose.