Cost of living in Christchurch (New Zealand) is 8% cheaper than in Aalborg (Denmark)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 459 prices entered by 69 different people.
For example, to keep the same standard of living that would require kr27,000 in Aalborg you would need to make just about kr24,714 (NZ$5,871) in Christchurch.