Which expansions does Deluxe / Compendium include?

So I've been buying a lot of the supplements, especially while they were all on sale for the kickstarter. I've been noticing some duplications in some of the things I've been buying between the compendium and the supplements. Like a duplicate map and a couple duplicate scenarios from Midville. My question is... While Compendium obviously includes rules from things like Dueltrack, Truck Stop, Boat Wars and similar... Is it still worth buying those? Does the Compendium include everything those supplements include, or is there no point in buying them because everything they have is in Car Wars Deluxe/Compendium? For instance, the Convoy adventure supplement has Truck Stop as a requirement, but the Compenium includes a lot of what it seems to expect out of it (I assume the AP Grenades and the Flechette Grenades are the same thing). As well, what supplements aren't even TOUCHED on in the Compendium (like the Champions supplement from 1st Edition)?

Which expansions does Deluxe / Compendium include?