Yes, you're right the other poster is wrong, the warranty is international. Don't take my word for it, one can verify it. Here are links to the iPad warranty and the optional Apple Care warranty:
standard warranty for iPad in North America:
http://images.apple.com/legal/warranty/docs/NA_iPad_Warranty_v20.pdf
Apple Care extended warranty for iPad in North America:
http://images.apple.com/legal/applecare/docs/NA_APP_iPad_English_v1.1.pdf
Nowhere in either warranties is there any provision that limited warranty service to the country of purchase. If you believe there is such a restriction, point it out.
And I quote: "Apple may restrict service to the country where Apple or its Authorized Distributors originally sold the hardware product."
This leaves it up to Apple to decide whether to service the product. Thereby implying there is no international warranty, but it is at the descretion of each Genius.