No, you see, the "political" agenda of a newspaper is one thing, but that doesn't mean that even the articles about the weather in the newspaper will be politically colored.
Gazzetta still sells more than all the other Italian sport newspapers together, and out of Italy it sells 10 times more than all the others. That's because it's a quality newspaper, even though as Juve fans we have every right to hate them for what they were doing in 2006.
In my experience with all the Italian newspapers I noticed that when it's about transfers, Gazzetta are not only more professional, but they are also more reliable. I think it's because they already sell a lot and they don't have to publish spectacular transfer rumors in order to get more byers. I'm guessing that they have much better informers in higher position in every single club, and also among player agents. Also, they don't rush to publish every rumor and they do it only if it's confirmed by more than one source or by an authority in the subject.
Of course, this doesn't make every transfer news they publish true, far from it actually, but I learned to trust Gazzetta more than CdS, Tuttosport and the rest.