Other aspect that is essentially different about QHydrogen (compared to Joi and SHT) is that they are not asking for funding, nor offering investment opportunities, and AFAI can tell, they are building their plant and have secured the permit for water extraction, which might mean not much on its own, but is certainly telling that the guys are moving ahead wether if one believes them or not. That only teases my curiosity even more.
That is their best feature.