Just a quick snippet from Digital Foundry
In an era where the likes of Naughty Dog and Sony Santa Monica have defined the graphical state-of-the-art with Uncharted and God of War, Xbox 360 finally has its own shot at the title - and it's a genuinely worthwhile, lavish and occasionally even breathtaking experience.
http://www.eurogamer.net/articles/digitalfoundry-vs-halo-4