Prompt Engineering for Stable Diffusion - A look at prompts : Ultra-Realistic vs Hyper-Realistic

We examine prompts for their particular effectiveness and try to come up with a plug-and-play formula that can be used to create outstanding images and soon-to-be videos. The Positive Prompt is: (A video guide will be available soon; hit me up on Twitter or email if you want a copy of the PDF that I have so far. The only change made to this prompt was the first word, from hyperrealistic to ultra-realistic. Note Seed-1 image was generated by using the underscore instead of whitespace, but I removed the underscores for the final images to see if it would clean them up.
Positive prompt for local installation of stable diffusion 2.1
Hyperrealistic, (Photorealism:1.55), intricately detailed, (((steampunk city)), ((daytime, dynamic lighting )), (((aliens-attacking, explosions, battle-ground))), centered frame, mystical background, dark fantasy concept ))), color depth, dramatic, side light, colorful background, a masterpiece, dynamic lighting, hyperdetailed, intricately detailed:mystic:magical, HDR, Cannon M50, Splash screen art, trending on Artstation, deep color, Unreal Engine, volumetric lighting, Alphonse Mucha, Jordan Grimmer, purple and yellow, complementary colors, Epic, cinematic, brilliant, stunning intricate, meticulously, detailed, dramatic, depth of field, atmospheric, maximalist, digital, matte painting, 16K resolution, style-Empire, by Guillermo del Toro and By Tony Moore...