Both are hot goalie prospects whether whether they become an elite goalie or not time will tell us, Vasilevskiy is a first round pick and usually teams are caution about drafting goalie in first round unless he is exceptional or they see huge potential there, as many of elite goalies are drafted in round 2 or 3, because Vasilevskiy is first rounder compare to Murray(3rd rounder) expectation is higher and so far he is responding well.
There is always danger for Russians to leave for KHL but many of new young generation Russian kids have a different mentality and want play in best league in world which is NHL. They are more prepared, taking English courses from younger age, some even come to North America to play their junior hockey.