It could, alternatively, be titled "Fall of the Republic," but effectively they mean the same thing.  There is, of course, the fact that Ep. II, which had a plot in which the clones were a minor element, didn't even get the "Clone Wars" title that any half-witted third grader would find more appropriate but rather something which made absolutely no sense.  "Attack of the Clones?"  The clones fought on the "good" side, after all, and only attacked a Sith/Trade federation enclave.  Oh, wait, the clones as a minor plot element thing isn't really relevant, since Ep. II HAD NO PLOT.  Anyway, given the direction the recent Star Wars attempts have gone, if only we were so lucky as to get a title as rational as "Rise of the Empire"