I personally enjoyed the campaign more. Live was fun, there's no doubt about that, but the campaigns Epic pushed out were always so gripping and entertaining and replayable. They had length and a good plot and I enjoyed that about the GoW series.
i just totally sucked and i got stuck on General Raam on the train xD
those damn bats or what ever they were would always get me...
GoW 3 would defonitely be a game to buy if i still had an xbox