I refer to the following documents:
1. http://www.apple.com/cn/legal/statutory-warranty/
Here is written that i actually have rights one 2 kinds of warranty:
A. China Warranty Regulations
B. Apple One-Year Limited Warranty
This also applies to Iphones.
If you look more close to the Apple One-Year limited Warrant it is written under "Overseas services" that Apple may restrict service or an authorized Apple reseller in the country initially sell Apple products. That's not a yes or a no, it's a may. I question if Apple may decide that by them self.
2. http://store.apple.com/Catalog/Images/worldwidewarranty.html
Again in this document I cannot read anywhere that it is written towards a specific product. Also if you read the section "OBTAINING WARRANTY SERVICE" there is written: "If the product is portable, meaning that it can operate independently without a power cord, you may obtain warranty service worldwide." So I don't think this refers only to an imac. Again in this document it's not a yes or no. It's a may.
3. https://www.apple.com/legal/warranty/products/iphone-chinese-s.html
Again a may in this document. Read the section "Important restrictions". Also under "Warranty Service Options" Apple seems to provide a solution. Not for free but they offer help.
So still I disagree. Yes there is nowhere written they should but there is also nowhere written that they should not. I really curious what would happen if I would provide this case to a local lawyer or customer organisation. This in combination with calling something worldwide warranty and the local customer protection laws that are in place.