That's beautiful, in itself. Although it scares the heebie jeebies out most everybody it seems.
The thing is, this guy is such a good advocate, and has this tempermant where he can and will take any side of an issue and build an argument to support it, in his role as advocate, that he is just too damn good at answering these questions. His answers re: Roe are amazing. He's walking a line and no one knows what to make of it. He's not simply saying "I can't answer that." He's approaching it, he discusses stare decisis, privacy, etc. But he leaves you guessing.
It is beautiful. Most people want to have judges who will give their side a slam dunk with any case brought before the court. Roberts will make lawyers do their work.