Ubiquitin, if you want to look at it like that, the “control group” is the total of people who were in high risk categories and presented with symptoms of Wuhan Disease, and were not treated with this mixture. Of that population, what percentage ended up needing intubation, and what percentage ended up dying? The answer is, a significant percentage. He’s asserting that 5%-10% of that “control group” progressed and eventually died. Thus, of his ~400, he expects that without his treatment 20-40 would probably have done the same.
But of course that is not a proper control group because all sorts of confounding factors have not been ruled out. So considered as scientific research this would be a bad study and would not prove anything. However he is not conducting research, and doesn’t purport to be. For his purposes it’s sufficient, and the only conclusion one can draw is that it seems likely that his treatment is helping.
When there is time to study this properly we will get a better idea, and may find out that it doesn’t help, and that his apparent success was illusory. He readily acknowledges that. It’s just not the most likely outcome.