Which country is better for doing MBA among India and New Zealand?

Every country has its own importance and it specially depends upon the institution also in which you are enrolling. In India, there are lot of institutes which provide very good education and placements in MBA. If you want to go abroad, try for Australia.

If you can get into one of the most reputed institutions like IIMs, etc., in my opinion, India is a better place for MBA education as compared to New Zealand.