Note, I didn't say that immigration is impossible. All immigrant needs is to be profitable for the country he wants to move to. If he has really good skills in a priority area and if purposed country has a lack of qualified workers in that area, he has a chance to get a work permit. In this case all depends on his skills. And it's not "pessimistic" point of view, rather it's realistic.
Actually I don't know much about NZ immigration policy, but in some countries(CZ for example) you can find a job on the spot, in other countries(for example in Australia) you have to prove your skills via some tests and only after you have appropriate number of points you get a work permit.
NZ immigration policy is points based like Australia. There aren't any tests that I know of except English language tests, which are waived for native english speakers.
Actually I don't know much about NZ immigration policy, but in some countries(CZ for example) you can find a job on the spot, in other countries(for example in Australia) you have to prove your skills via some tests and only after you have appropriate number of points you get a work permit.