Gaunce scored only his second goal in the past two seasons. He went all of 2016-17 without scoring.
"It was a big game for us, for our confidence," he told Sportsnet.
"Today, we wanted to compete - that was our main goal," Gaunce told Sportsnet.
Columbus held a 1-0 lead after the first period, but the Canucks answered with four unanswered goals in the second period. Two goals came on power plays.
Jones gave the Blue Jackets a 1-0 lead on a slapshot at 4:33 of the first period. Henrik Sedin was off for holding at the time.
Baertschi drew the Canucks even on a power play 1:19 into the second period as he put in Vanek's nifty backhand pass.
Slightly more than four minutes later, Gudbranson put the Canucks ahead 2-1 on another power play, firing in Loui Eriksson's long pass from behind the net.
Gaunce extended Vancouver's lead in another man-advantage situation at 14:31 of the second. Vanek provided another cheeky setup - a spin-around, backhand, cross-ice pass. Gaunce flubbed on his shot, but the puck still managed to go in off a Blue Jackets defenseman.
Edler gave the Canucks a 4-1 lead less than four minutes later. His slapshot from the point went in off a Columbus player in front of the net.
Harrington pulled Columbus within two goals on a long, high shot with 7:25 left in the game, but the Blue Jackets could not get any closer before Virtanen's empty-netter closed out the scoring with less than 10 seconds to go.
--Field Level Media