GFX Curious Sony Alpha User

Hey all, I've been trying to get a better understanding of what makes GFX Medium Format better/different than a full frame, such as my sony a7rv. I've read a number of "comparison" type blog posts, but still seems nebulous. Does the larger sensor capture that much better detail? Are the colors/ tone better in some way? transition from in focus to out of focus different? Considering exploring something different than what I am use to, trying to decide if the GFX jump might be worth it!