DC has a nice range of cosmic or cosmic related characters like Adam Strange/Rann, Daxamites, Kryptonians, Khunds, Tamaraneans, Durlan's, The New Gods, the GL (and rainbow corps), R.E.B.E.L.S., L.E.G.I.O.N., Legion of Superheroes, Qwardians, Manhunters, Anti-Monitor, Monitor's, Lobo, The Omega Men, Captain Comet, the Dominators, etc. so they have a nice canvas there but for whatever reason I just don't feel like they're always the most developed nor do they typically share the same space unless you do what Bedard did and tie in a lot of other cosmic stuff into R.E.B.E.L.S. like the GL's, Lobo, Starfire, Adam Strange, and so on. In that vein, I think DC's closest thing to Annihilation was basically R.E.B.E.L.S. with Starro which I really enjoyed but unfortunately that also got cancelled but I've got to give it to DC they gave it as far an extension as they could.