Digital Foundry
Technologically speaking, Halo 4 doesn't put a foot wrong throughout the entire eight to nine hour campaign. The enhancements to modelling, lighting and environments are beautiful and play host to some of the most epic gunplay we've experienced on a home console title. Perhaps this is not surprising bearing in mind that the 343i tech team had the know-how and the time to push the 360 hardware further and harder than any other developer we're aware of. Factor in how key 343i staff contributed to the development of DirectX 11 (and almost certainly, the genesis of the next-gen Xbox) and we have some idea of the spectrum of talent Microsoft put to work here.
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