The only negative reviews are by Ps3 only fans (meaning they do not own both consoles) or biast review by PS3 reviewers. Cross reference posts and reviews for the obvious.
Then there are those ranting about COD BOII which they have yet to even play. COD games typically are buggy at launch and very much the same old thing. I like them but they have less replay value, and the fact is Halo titles are played longer and stay steady.
I myself am a PC gamer, and spend more time on MMo's. Halo 4 was the only game to pull me back to a console. I own a ps3 but the lack of strong titles and any meaningful exclusives, minus 1, just doesn't cut it for me. I'm on a pC, and more on the 360 if I play on a console.
Halo 4 was well done. The graphics amazing concidering the hardware is getting old. The tech savey know the PS3 has serious flaws (developers have complained). The Vita was better designed, and thanks to Sony's decision to increase it's main ram, it has features they just can't include in the PS3.
343 pulled through. THey did it well. I can tell by some comments that are negative that those people haven't played the title, since they are commenting on issues that do not exist.
It's not a perfect game, but it's damn good. Then again many titles are lacking this day and age, but Halo 4 offers a tad more, and is better then previous editions which at times were lacking.
At least there is a title like this on a console, and some others as well that are decent, yet if it is on PC I'll play there first.