I saw a fan edit of some Mandalorian scenes tracked with Williams’ music. And it was a difference like day and night. With Göransson’s score I just saw actors in weird costumes walking through an artificial scenery. But Williams’ music provided the fairy dust to make me believe that I watch events in another world.
But I know, it works for others and there are many fans of Göransson’s Mandalorian score. So, just my problem.