Nanosuit is way better than the Mjolnir armor. Better shields, Stealth ability built in, Armor power doesn't stop you from moving, more mobility, doesn't need to be enhanced to be a bad ass. Characters actually talk and don't have a dull personality (exception being ODST's who I actually liked and cared about), they show their feelings, have better stories and are not freaking stereotypes. You actually feel you're getting invaded, in Reach it was all a joke, you didn't feel hopeless, you just saw everything getting destroyed and were like oh well, In Crysis you actually see, how everything is going to hell. Graphics, [b] Obviously [/b] The Covenant is a joke they're all a religious association, I mean, they worship a race as their gods only because their technology, yet when they found their gods they want to destroy them. And again, the races were stereotypes. Flood, is the only point I can't disprove, although the CEPH does infect, it doesn't do as much as the Flood. Halo is a linear shooter, Crysis offers many ways to beat a level, be it by being stealthy, sniping, going guns blazing, it isn't free roam, but level design is better than Halo. Differen't objectives, not only Herp Derp activate Anti air turret and go trough the same level 2 times herp. Collectibles add new layers of replayability, key cars, souvenirs and audio logs. You gotta admit, Halo get's repetitive, it's always a group of grunts, a elite and a couple of jackals. Hunter's aren't even hard. Don't get me started on the Flood. In Crysis is always different. And the Pingers are real monsters. Upgrading you suit to fit your playstyle is actually pretty good, and the same for upgrading your weapons, again, it adds replayability. In Halo you can't do anything like that. Technology in Halo sucks, it's 25xx and look at it, while in Crysis is just a few years ahead of us and look all they have acomplished. I'll edit more, wait. [Edited on 07.13.2011 3:42 AM PDT]