It cites Card himself which supports that, though: >Despite their similar public image, however, every other element of Ender’s story is designed to show that

It cites Card himself which supports that, though: >Despite their similar public image, however, every other element of Ender’s story is designed to show that in his case the image is not reality—he is not like Hitler or Stalin, exactly the opposite of what Radford claims. Card's clearly trying to get people to agree with him that Ender is an "innocent killer", based solely on this quote.