Well Land of The Dead is still pretty gory. Though Wolf creek and Land of the Dead are both horrors, I'd say they are significantly different. Wolf creek is one that you need to lend yourself to the story.
Its slower to build up but it horrific near the end. Land of the Dead is clearly less psychological, more gory and involves slightly less though. I think WOlf creek is a better more intelligent movie, but Land of The Dead is more "fun"
Land of the Dead is perhaps not as cutting in satire terms as it predecessors, and slightly more formulaic. however it still ok, as long as you ignore Dennis Hopper's overt the top city boss