Game Informer magazine isn't a bad magazine. In the world of journalism, its a race to be first in whatever news, or reviews or anything that may come along. So they review what they have, even if it is a little pre-pubecent, so to speak, as was the case with ED. I'm sure if GI was that bad of a magazine, Billy wouldn't have wanted to work for it. I subscribed to GI until last November, and plan on renewing my subscription as soon as possible.
Besides, they tell their readers if they are basing their review off of an unfinished game or not.