I'd say that the FACT that "not a single science society or organization in the world disagrees with AGW" is strong evidence, and a "logical argument", for the 97% consensus. You pose a false equivalence: if "our side" consists of all the climate scientists who actually study climate AND all of the science societies, but "your side" consists of a bunch of biased non-experts in this discipline, we would have to wonder why you would suspend rationality to consider this a serious controversy....