His Averages on cricinfo seem quite the opposite to what you've said. Its an average Average . Have they missed a thing or two?
He's only 18 and he made his debut more then two years ago, so of course his record isn't going to look that flash. He played for the New Zealand emerging team over in Australia last year against Australia, South Africa and India and racked up a few runs. I think it was three or four 50's from memory. He's an all-rounder though, but he's hardly bowled for Canterbury since making his debut. He was clocked as a 16 year old bowling at 138K but he's had a few injuries that have prevented him from bowling since then.
Good signs this season though as he's bowling a few overs and picking up a few wickets, now he just needs to score runs.