Hamilton seemed to take a while to get comfortable in this car, but damn, when he did, he seems utterly unbeatable again.
As for Stroll, what a massive improvement. He was almost half a second faster in Q2 than Q3, Massa was less than 1/10th slower in Q3. So Stroll was almost half a second faster than Massa on their fastest laps. Considering where he's been that is a monumental improvement.