Gardiner: 52.3% offensive zone starts, Tanev: 42%.
Leafs won 242 offensive zone starts, over 60 more than the Canucks. (d-men have no control over faceoff wins. More shot generation = better corsi... not hard to understand)
Gardiner finishes 52.2% of the time in the offensive zone, Tanev finishes 49% of the time.
Canucks have lost more offensive zone draws than they have won when Tanev was on the ice. Leafs had a positive differential, making Tanev finishing his shifts in the offensive zone MORE than he starts them a lot more impressive than Gardiner.
Tanev averages 2.18 goals against/60 mins of ice time, lower than any Leafs d-man.
Gardiner faced easier competition than Morgan Rielly, Matt Hunwick, Martin Marincin and Dion Phaneuf. Only d-man who faced easier competition was Frank Corrado.
Edler and Tanev face the toughest competition on the Canucks. 5v5 Gardiner only managed four more points than offensively un-gifted Tanev. So no, they're really NOT that far apart offensively, but defensively... Damn. Check your facts, man.