Yep – rotate the device to landscape, open the web page and refresh: you should get results listed above. Then rotate the device to portrait and the results on the screen won’t change (unless you refresh). Thus you are seeing landscape results (the rotation to portrait happens after the document.write calls). This should work on iPad 2 too?
(NOTE: I’m just guessing here, I’ve not tested myself since I don’t have an iPad Mini nor any iPad running iOS6.)