The idea of capitalism as schizophrenic is a kinda cool metaphor, and I think Control as he opposes it to Foucault's concept of Discipline is incredibly helpful to have around as concept, but sure, most of Deleuze is like weird, avant garde metaphysical shit. It's for big nerds. Difference? More like, diff the fuck outta here, am I right? He was pretty based, but he wasn't out here writing something technically brilliant or generally accessible enough to change the world. We're all probably better off reading a wikipedia page about Control and Anti-Oedipal and getting all of our Deleuze through Mark Fisher.