Wilton provides two serving charts, wedding (1x2x4) and party (1-1/2x2x4) for the same size (2 or 3" deep) pans:
http://www.wilton.com/cakes/making-cakes/
So it would make sense that the serving yields would vary, depending on which serving size portion you choose. ![]()
Additionally, in AU there are additional serving sizes which we don't use here in the U.S. - coffee and dessert.
An Australian dessert portion is roughly 2.5 x 5 x 9 cm high, while a coffee portion is half the size of a dessert portion (about the size of a petit four).
AU sites with more info:
http://www.planetcake.com.au/couturecakes/faq.php
HTH
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