OK. The All Blacks have never been ranked lower than 3rd. So let's look at matches between the All Blacks and teams that were either ranked above them, or next best when we were no. 1, for at least part of the year in which the match occurred (I'm not going to go too-fine grained on this). I will rely on this table
and this info
https://en.wikipedia.org/wiki/World_Rugby_Rankings to figure out when relevant matches were played. This also conveniently excludes the Lions. On this measure, we do seem to be a little below par.
2003: NZ's lowest rankings ebb, behind both England and Aussie at various points. Played 4, won 2, lost 2 -
50.0%
2004: Below England briefly, Aussie also were at 2 for a bit. Played 4, won 3, lost 1 -
75.0%
2005: NZ #1. Aust and SA filled the #2 spot. Played 4, won 3, lost 1 -
75.0%
2006: NZ #1. SA and France next (remember France?). Played 5, won 4, lost 1 -
80.0%
2007: NZ started as #1 over Aust, briefly France, then SA. RWC hiccup saw us dip to #2 behind SA. Played 7, won 5, lost 2 -
71.42%
2008: NZ regained #1. France bubbled under never to see the top 2 again. SA dominated the also-rans, with a brief cameo at 2 by Australia. Played 7, won 5, lost 2 -
71.42%
2009: NZ and SA shared 1 & 2, but perhaps really shouldn't have. Played 3, won 0, lost 3 -
0.00%
2010: NZ begins an unbroken run at #1. SA and Aust share #2. Played 7, won 6, lost 1 -
85.71%
2011: As per 2010. Played 5, won 3, lost 2 -
60.00%
2012: As per 2011. Played 5, won 4, lost 0, drew 1 -
90.00%
2013: SA kept a firm grip on #2. Played 2, won 2, lost 0 -
100.00%
2014: As per 2013. SA kept a firm grip on #2. Played 2, won 1, lost 1 -
50.00%
2015: Fresh blood! As well as the familiar SA/Aus duopoly, Ireland and Wales each had a turn at #2. Played 5, won 4, lost 1 -
80.0%
2016: The Jones Bounce sees England return, superseding Aussie as #2. Played 3, won 3, lost 0 -
100.0%
2017: England cling on, awaiting their big clash. Played 0
NA
2018: England slip from the perch, the Irish Rise. Played 2, won 1, lost 1 -
50.00%
Overall: Played 61, won 44, lost 16, drew 1 -
72.95%