QBZ191 does recoil a lot less from this comparison video. The inclusion of a buffer tube, more well-toned gas regulator, and better muzzle device can all contribute to recoil reduction.
A combination of multiple factors. First, Canada has banned virtually all AK/SVD variants for more than 2 decades (other than a handful of M78s that sell for 10k), and last year banned VZ58, that makes Type 81 the closest thing to an AK Canadians can get. Second, 7.62x39mm ammo is dirt cheap in Canada (mostly Norinco surplus), with the ban of VZ58, Type 81 become one of the few desirable options for this widely available ammo. Third, Type 81 belongs in the non-restricted category of firearms meaning there is less regulation on it, and it is one of the cheapest non-restricted modern service rifles that you can buy in the Canadian market (Aug, Scar, G3, Fal, Ar-15, Ak, Sig 550s, M1A, HK416/417 are all banned. G36 costs 7-10k, Tavor costs 2.5k, ACR costs 5k due to stopped production. This actually makes Chinese rifles extremely desirable because Type 81 costs 1.5k and Type 97 costs between 800CAD- 1.2k.)
In sum, Type 81 is successful in Canada because it's literally one of the very few affordable options for Canadian gun owners (besides SKS, Type 97, and a bunch of weird Canadian home-made AR-180 knockoffs).
If QBZ191 will have a civilian version available (maybe it is not hard to do since the gun appears to have drop-in trigger packs), and can become approved for sale in Canada in the future (but I highly doubt), it may became next big thing in Canadian gun community.