This is juxtaposition, not apologia. There is a scale of awful, and Dubya is objectively on the lesser side relative to the Paedophile President, seditious traitor and inarticulate pissboy that he is. There is no section of the constitution that I know of which he hasn't violated. Dubya was many of the things which the traitor-in-chief is, and that makes the juxtaposition all the more apt. If they were supposed to be comparing a good president, they'd have picked FDR. Instead, they picked one who was generally considered one of the worst until that point to show that, even when you think you've scraped the bottom, someone can still manage to break the bottom of the barrel and scrape the mouldering, fetid carcass of a plague rat off the floor below.