All the different Batman movies and series had their own ups and downs.  The Nolanverse is awesome because of its (relative) realism and awesome aesthetics.  The Burtonverse Batman series was also good for its own aesthetics and story-telling.  I try not to judge things like whether Bale or Keaton is a better batman for the same reason I won't try to say if Heath Ledger or Jack Nicholson was a better Joker.  Each has their own charm and style that makes them unique and amazing in and of themselves.