Artificial intelligence is in everything these days. AI in a vacuum isn't entirely new, but both Shark and Dyson have launched new AI-powered robot vacuums in the last month, bringing a fresh take to the field. The Shark PowerDetect UV Reveal ($1,300) and the Dyson Spot+Stain Ai ($1,200) both promise to use AI to find stains and spots on your hard floors that need to be scrubbed away instead of just passed over a single time. With such similar promises, I had to know: Is one better than the other, both at spotting stains and at overall robot vacuum cleaning ? I unleashed both on two floors of my home to see which one did better job of cleaning. I set up a few intentional obstacles, from placing cereal in tricky corners to intentionally creating stains. It's similar to how I comparison-test stick vacuums , but stain spotting and corner reaches are my biggest focus for these two similar vacuums.…