Not sure if I would call that a victory per se. We already knew in a way that they would release both versions on DVD. This announcement is just the Weinstein Company attempting to deal with the imminent protesting for "Superhero Movie". It proves that they are paying attention to the fans, but probably not much else.

On the other hand, they have to know by now that irritating ~90% of the people who will eventually go see Fanboys has got to count for something. Maybe they really are considering releasing the film with the cancer plot intact.