i havent kept up with this topic but on the subject of halo1 and halo2 on ultimate? ive played both many times and i still think that halo2 is more of a challenge and it still requires strategy/skill. the ai is the same for both games just more advanced for part 2, that with the fact that now you can duel weild and there is no more health brings a different level of pacing and strategy to the game. i love both games in their own right, just with halo2 had online co-op, and no arbi levels. the only point i give to halo1 is there were more open leveled battled, which in some ways gave you more options on how to tackle the enemy.