Wow how awesome was far cry 3, really loved that game, have you heard they are adding an outpost reset feature (free addon), taking over the outpost was one of my fav. aspects of the game... Yeah i have crysis 3 for 360 and yes I to thought crysis 2 was a marvel to look at and yes its very hard to believe but crysis 3 looks even better than 2 and looks btter than far cry 3.
Just let yourself be surprise and don't taint your expectations of comparison shots of pc vs 360, because the pc of course is much better looking (more objects, higher detail, sharper image), i mean the 360 has all the important graphic aspects, such as the great lighting effects, extra lens flars, camera blur, they even during mid game during the story were you lose control of your character (still can camera pan around), they pump up the graphics which is very noticeable when they do up close facial shots and you just simply say WOW, you literally cant believe what your seeing, its impressive because there's no load time in between gameplay and quick story telling only between levels, which there is no load time if you install the game and watch the cinematics
I had sound issues in the sp, but i suspect it was because i was downloading my free copy of crysis 1 in the background (which i dont know why they would allow that) while i was playing it because when i tried out mp the download stopped and so did the sound issues.