I did misunderstand. However a couple of points. 1) Barbarossa as it was historically concieved had little chance of success. How much is argueable and how apparent it would have been to the Germans is another question. 2) Better intel implies that Barbarossa is modified at some point. These modifications would have a good chance of improving the outcome for the Germans. Whether or not a win becomes possible is an open question. I suspect it is still not likely but that's just a guess.