The girls over at Gamespot reviewed Quake IV for the Xbox 360 where the verdict was the hardware was unable to supply a steady frame rate for the usually smooth running PC game:
The Quake series of sci-fi first-person shooters has always had a fairly sketchy history on console platforms. It has often represented the pinnacle of PC graphical capabilities, but translating those high-end graphics to affordable, mass-market consoles has usually proved to be a tough process. That trend continues with Quake 4 for the Xbox 360. Despite the 360’s stature as the most powerful console on the market, it just can’t keep up with this game’s demanding visuals (which probably speaks more to the lackluster quality of the game’s translation from the PC than to the system’s power, judging by how well the 360’s two other first-person shooters look by comparison). Quake 4 is a compelling game, but when saddled with an extremely unstable frame rate, it’s tough to recommend.
Overall score was 6.6/10.