Gobert is leading his team. Capela isn't. That's the difference. If you were to swap Capela and Gobert teams, the Jazz would be much much worse and the rockets would be much better. Capela gets a lot of easy looks because teams have to gameplan more on Harden and CP3. A Harden to Gobert PnR would be hard to beat.
I think defensive switching is an overrated talking point that everybody is obsessed about for some reason. Rudy = an elite defense. It was true last year and is true again this year. He is a one-man top 5 defense.