An application of this hierarchy:

Jack the Scarecrow. My crystal healing pills will give you eternal life. For $50.00 each, you need never die, suckers.

--

DH0: "I'm not interested for myself, but can I buy you a border collie and give her some? If you're going to live forever, you're going to need a smart friend to make the really tricky decisions."

DH1: What, exactly, is your profit margin on these crystal healing pills? If we don't live forever, would you still make money off of them?

DH2: Any post that ends in the word "suckers" directed at the readers is difficult to read charitably.

DH3: > My crystal healing pills will give you eternal life.
WRONG.

According to this hierarchy, D3 is arguing on a higher level than DH0, DH1, and DH2. And, well, maybe that's correct. "Higher" doesn't necessarily mean "more subtle." But in the absence of this hierarchy, I'd have been tempted to order the arguments from low- to high-level as 0 < 3 < 2 < 1.

(EDITED to remove potential applause light; EDITED again to better hit the idea of DH2)