The PAL version of the game is particularly interesting from a technical perspective. PAL games traditionally ran at a slower refresh rate (50Hz) than NTSC games (60Hz), often resulting in a 17% speed reduction and black bars on the top and bottom of the screen (letterboxing).
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It is worth noting that while typically received full audio localization, Nl (Dutch) was often limited to text and manual translations, as full voice dubbing for the Dutch market was rarer during that era due to the high English proficiency in the Netherlands. The inclusion of Dutch in the language code highlights the growing importance of the Benelux market for Sony in the mid-2000s.
Collectors pay a 40% premium for NZ variants over Australian ones simply because the box art is cleaner and matches the US/UK aesthetic.