I wouldn't say its interchangeable. Gibson is good, but Vasilevskiy won the Vezina at age 24,
and he's improved every season of his career into the clear best goalie in the NHL. Going into his draft, he was a generational goalie prospect, and has played as one in his first couple of years in the NHL.
Craig Custance recently surveyed GM's and coaches about the 31 starting goalies in the NHL. He used a formula to account for all their responses, and Vasilevskiy was ranked 1st by a long way using the formula that he did.
If you have a subscription, here was the article.
2019-20 Goalie Tiers: Anonymous panel of GMs and coaches...