I thought he got involved well, distributed well to the flanks, held the ball up with his back to goal and was fairly mobile. Made some good runs too, which were flagged off, and he wasn't off on one of them either. The chip to Barzagli was pretty sweet too. I thought he linked our play well. Infact, after Gio's sub, you would've noticed Juve went on the offensive again, with Quags arrival, till which time they were soaking up the pressure after conceding one.
Yes, he is the most likely to score because he has a striker's instinct. His awareness to goal is probably the highest of all our forwards which is a good skill to possess. Quag has been the most unfortunate circumstantially, because he gets almost no continuity on this team, seeing how stubborn Conte is with his choices. You can't play with freedom if you're always looking over your shoulder to be subbed. There is bound to be anxiety.