I suppose the question arises of 'If the Guardian had already released it, why did Wikileaks bother doing so?'.
Unfortunately, it seems, to me, to boil more down to a 'battle of the readers' than anything else. Wikileaks didn't want the Guardian to get all the publicity for doing something pretty dangerous and so decided it was ok to do exactly the same thing. They could have taken the high ground and attacked the Guardian for releasing them all unredacted, it might actually have earned them more respect as a source of information. Instead it become more about sensationalism and grabbing the viewers.
It's kind of a pity, even if it's not very surprising, that this whole thing has boiled down to attention value.
The strange part is that I'm not, in theory, against the idea of something like Wikileaks, when governments, any Governments behave in an underhand manner then they need to be exposed, but the whole thing stopped being 'for the greater good' some considerable time ago in my opinion.