Wrong. You were going by what you heard he said. Big difference.
I went by what is on the clip I linked in the OP. Ricky gave me some reassuring additional information.
But Trump claiming the "metric" is his own mind is a terrifying thought. At least he admitted it is the most important decision of his Presidency and he hopes he gets it right. That's kind of out of character, in a good way. I'll give him that.
The echoes of "I know more than the Generals" haunts me, though. There is no reason to believe that he doesn't think he knows better than the epidemiologists.