Could you elaborate on just how it is more powerful?

Look around a bit for info on controlnet. You can use depth maps, scribble in where you want objects to be, or place human poses in a scene and SD will use it to generate an image. You can combined multiple controlnet models and control how much they contribute to the scene. The level of control available is pretty awesome. I say that as someone who was in the DALL E beta and used midjourney for a few months (though I guess I don’t know what advancements they’ve made in the last few months).