Even though it is the same actor, the voice is completely different. Also, he talks ALL the time now. You think "Flag stolen, flag dropped, flag stolen, flag dropped" was annoying in halo 3....just wait till the next game.
On another note ODDBALL LOOKS FREAKING AWESOME NOW.
Also, check out the new ball physics in grifball, its similar to oddball. Lots of passing.
The gravity hammer sounds so weak now. Overall so far, the only bad thing I have to say for Halo 4 is the audio.
And here vehicle lovers. Gauss hog, scorpion, banshee. Also shows the new flag carry physics and wheelmen type medals.