Not only was NZ faster but they were sailing several degrees higher upwind, as stated in the interview.
I can only imagine how much the wing design comes into effect here. I bet it's a huge part of the difference. We know Oracle has put a lot into their wing designs so hopefully they're at least on par here.
They also seem to be having success with a smaller jib. I know that everybody is trying a lot of different jib configurations, but you can't argue with the success of the smaller one.
