Unfortunately, I think that the introduction of the Death Star into Episode II is contrary to everything we allready know. George Lucas has a tendancy to ignore the novels. Because Lemelisk (sp?) is credited with designing the Death Star in the novels, there is no way he did so in Ep II. Those flying aliens (sorry, I'm not realy that interested in the xenobiology of Star Wars) are credited with designing it. I was also under the impression that even the superstructure was designed in the Maw, hense the prototype found there. As for which was larger, the DS II was, I believe, half-again the size of the original.