Did Ferrari really make the right strategy call? I'd say not. They just got extremely lucky.
They managed to lose only 13 seconds (rather than 22) on their second pit and still only won by 20 seconds. That's with running in clear air or not having to attack or defend anyone trying to take the front spot that entire time while the two Mercedes were fighting the whole way.
Sometimes it's better to be lucky than good. It's pretty clear that without that perfectly-timed virtual safety car Hamilton would have come out behind Antonelli who would have slowed him enough to prevent catching Russell.
