This is a quick visual comparison of various settings for the same prompt between Midjourney and Stable Diffusion via DiffusionBee and DALL-E 2. High resolution versions are available by clicking on the image.
I'm not covering the image-to-image abilities of Stable Diffusion, the image sourcing of Midjourney, or the outpainting capabilities of DALL-E 2.
a robot dressed as a medieval knight drinking a goblet of wine
quirky underground comic style illustration, pen and ink and watercolor and collage in the style of Marc Bell, bathing cats, bath house onsen cats
This prompt was taken from this entry that I found on the Midjourney community feed. I just liked it.