The answers are unsurprising but probably instructive.
Australian teams went 12-28 against non-Australian foes. No team from
Australia went better than 4-4 against foreign teams. Worth noting
however that the Reds that finished the season are substantially
better than the Reds that started the season due to injury.
NZ went 26-14 against foreign teams. No team from NZ had a record of
less than 4-4 (in other words, the Blues went went 4-4 against
overseas teams, and 0-8 against NZ teams). The Chiefs went 7-1, the
Crusaders 6-2, the Hurricanes 5-3.
SA went 22-18 against foreign teams. The Stormers were the class of
the conference going 7-1. Both the Bulls and Sharks went 5-3. The
only truly bad team by this measure was the Lions (1-7). The Cheetahs
appear better by this measure, partly one suspects because they toured
before Goosen was injured.
It's not an unreasonable conclusion to draw that the Hurricanes might
well have made the playoffs without the skewed schedule of the
conference system. They're the only 5-3 team not in the playoffs. On
the other hand, the Hurricanes had it within their gift to do so -
thinking in particular of the 47-38 loss to the Cheetahs, and 37-25
loss to the Brumbies, both at home, where they held large leads and
blew them.
Cheers
Brent