The best players for the Grizzlies won't be able to score against the Jazz. Gobert neutralizes Marc Gasol, and Favors neutralizes Zach Randolf.
I also think the Rockets have match-up problems with the Jazz. They are based on a drive and kick offense, and Gobert makes that kind of offense not work very well.
We'll see obviously. But, Gobert negates the way much of the NBA try's to play offense. He is a championship caliber difference maker.