Of course it's the 2nd highest dose because the highest dose would have killed him. And from what I read, he's still walking around.
You apparently didn't read the article, nor my post.
The article specifically said, and pointed out that part in my post also, that there was a case of a woman who had 40% higher dose, and she lived too. She had the highest dose known, and didn't die.
They don't even know what dose one would need to actually kill someone.
Read the article.