Would the large objects include babies or hardcover books?
Those weigh more than Kindle, for example.

BTW, how hard would it be for FAA (or airlines) to say exact iPAD model AA is using (probably iPAD 2 wifi 16G version?) and say only that model is approved for use?
I don't understand why portable voice recorder or electric shaver (that hasn't been tested at all) can be used but not the thoroughly tested iPADs.