..assuming there are no hills in NZ! Is your gps watch that accurate to measure 1 metre of climb - mine is never that accurate on climb measurement.
BB at a guess there would be 5-10m on that course
the low point on the log is 3m and the high point 13 so I am stuffed if I know how AP works out a 1 m climb, unless that is supposed to be the difference start to finish point
Anytime I run or ride around Champion Lake it records some phenomenal amount of climb yet I'd be surprised if it was more than 1m worth around the whole lake. You just can't trust everything you read on the internet.