"What are you, the Lions?" one wag suggested.
Canterbury quickly got into gear, scoring twice from too-easy breaks from inside their own half, two line-out moves, and another wide one.
It was 36-0 after 32 minutes.
Wanganui did, however, manage to score just before halftime, with solid second-five Timoci Seruwalu stepping over.
Fringe Crusaders player, lanky (aren't they always?) lock Mitchell Dunshea opened the scoring after the break, before hooker Nick Werahiko dotted down for his second try.
The red-and-blacks rolled their subs in the final quarter. Still, they kept their shape and cohesion. Their line speed and strong, head-on tackling was apparent.
Reserve back Steve Alfeld was given a try on a platter by the impressive centre Poasa Waqanibau, who scored one himself, and replacement fullback Caleb Makene was rewarded for his energetic injection with a late five-pointer.
Mistakes hurt the visitors; lost lineouts, ill-advised intercept gambles, ill-discipline, cheap penalties, slipped tackles.
But despite the gulf in talent, and tiring legs, the visitors toiled hard and showed true Heartland grit.
After its 134th successful defence, Canterbury now takes the Ranfurly Shield on the road against Mid Canterbury in Ashburton on August 4, ahead of the Mitre 10 kicking off proper on August 17.
Canterbury 71 (Tries: Jack Stratton, Mark Maitland, Dylan Nel, Nick Werahiko (2), Marshall Suckling, Mitchell Dunshea, Poasa Waqanibau, Steve Alfeld, Caleb Makene; Brett Cameron one penalty, six conversions; Finn Strawbridge two conversions)
Wanganui 5 (Timoci Seruwalu try).
