it doesn't always look horrible, and despite being technically mediocre it still menages to have a couple epic scenes. But damn, IQ really kills it. It was rather bad on my 50", tried it on my brother's projector on a 120" screen and that's the exact definition of blurry, jagged mess.
I am not sure Bungie games ever stood out from a technical point of view, but they really had to put a lot more effort in halo's "final" (my ass) chapter and x360 flagship title.
It should have been the killzone 2 of the x360 but ended up looking like some medium budget multiplatform fps.
Now, that's a problem with Microsoft first party devs; they're not really trying with their exclusives. Yes, there's Gears 1+2 and Rare games, but Forza 2 ? Halo 3 ? it's like they went the wii way and decided not to try going head to head with Ps3 exclusives, but there's a bunch of multiplatform games out there which show the console is capable of so much more.