Yeah, I think we all knew that was a lie.
I was looking for something completely unrelated today and discovered that not only does Ali Express sell suspiciously cheap transfer case chains for these, they actually have pictures of them--and measurements!
The chain they list as 33152-33G01, what my research above says is the "early" chain, is listed at 47mm (presumably across the ends of the pins). The picture shows it measured across the outer plates at just under 45mm wide (around 1-3/4").
The chain they list as 33152-30C00, the "late" chain, doesn't have a listed width, but the calipers in the picture show just over 32mm wide (around 1-1/4"). The listing says it also replaces 33152-G2301, which they claim fits all Terranos; Amayama says that PN fits only the four-pot Terranos and Terrano IIs.
Construction appears similar between the two, but the -33G01 has 29 layers, and what looks like springs down one edge, while the -30C00 has 21 layers, and springs down the middle. One of the posts I linked above shows a supposed WD21 box, with the springs down the middle, but given it's on a Navara forum, I suspect it's a -G2301 chain from a four-pot truck. Other pictures I've found of the -33G01 are too grainy to say for sure that they have springs down the side, but I sure don't see springs in the middle.
Anyway--if we trust the pictures in the listings on Ali Express (), the difference is indeed about half an inch of width.
So there we have it--proof (?) of an answer that already existed, to a question that nobody else was asking, six years later.