The amount of spin, bait and switch, and outright lies associated with diode laser modules is absurd. Paraphrasing one company, “our 10W laser module had such a tight spot size that we feel it cuts as well as an 80W CO2 laser.” Sigh.
Right now, the only two companies I’m aware of that have anything that might be called a 20W (optical) laser module are xTool and Atomstack, though Adam stack’s 20W module is being presented as a 130W module. I did see a YouTube video comparing Atomstack and the xTool quad beam lasers, and they were pretty comparable in performance.