Why are we NZ rated number 5 in the world in test cricket when we and South Africa had the most test wins last year. we should be at least number 2?

Rankings are based on performance over 3 years...since NZ performed very poorly in 2012 and 2013 that is holding them back...to move up they will need to defeat England in England in May.

No, you shouldn't be ranked 2. The highest ranked team you played against in that period is Pakistan, who are 1 above you. Go beat the top 3 and then you might have a case to make.

You didn't win a match against England at home and were slaughtered when you went to England. You have to beat the top ranking sides to pick up a decent amount of points. Play Australia at home, you will annihilate them. Easy points that lot.

Yes.