Earning miles is pretty comparable, though there are more booking classes which earn fewer miles (50%/70% vs. 100%), and of course no 50%/100% bonus miles on AC/UA/CO.

Burning miles is based on the distance flown, so creative routings are prohibitively expensive ("mini-RTW"), also awards within one region tend to be more expensive with OZ. The (only) benefit of the mileage-based award redemptions is you can touch several regions without paying high dedemption rates.

Awards with 10k-15k BIS miles are 78k/115k/150k miles in Y/C/F which should cover most destinations from Canada, so slightly more expensive than AC/AP.

Asiana award redemption table