In modern high-school terminology seven of the eight KiwiSaver providers recently scored by research house Morningstar would have been awarded grades of 'achieved' or 'approaching achieved'.
I think that means they passed, with the exception of AMP KiwiSaver, which Morningstar labeled as 'under review' (known as 'incomplete' to today's high-schoolers or 'fail' to old-schoolers).
The full Morningstar research remains proprietary (ie you have to pay for it) but the published synopsis, not yet available on its website, has this to say about AMP KiwiSaver: "Morningstar has yet to gain a complete understanding of the transition to a combined AMP/AXA offering. The underlying direct property exposure further complicates the move."
It appears Morningstar is still waiting for further disclosure from AMP about what's happening to all that money (over $1.1 billion as at September 30, according to Workplace Savings NZ figures).
AMP doesn't have to tell Morningstar anything, of course, which illustrates the limits of voluntary disclosure to private researchers in improving the transparency of KiwiSaver - especially if it isn't freely available to the public.