No, the jury is the trier of fact, and determines the credibility of each witness. They apply the facts to the law that they are given.
Note the original post above. The case apparently turned on the credibility of the witnesses.
Let's use copyright law as an example. You and I would probably agree that the current law is badly in need of reform.
Now, if I was called to jury duty, I'd be able to set my views aside, and determine the case based upon the current law. You might not be able to do so. But would you admit that up front, or would you lie about the fact so that you could get on the jury and subvert the law. That's the moral choice that only you can make.
The prerogative of jury nullification is part of English Common Law. English Common Law is part of current American law. QED.