Yep, I have not a single doubt in my mind that Halo 3 just lost it's greatness thanks to Epic Games!!!!
Check out these developer interview videos:
Part 1: http://www.gametrailers.com/player/24261.html
Part 2: http://www.gametrailers.com/player/24281.html
This game is completely beautiful. I cant wait to get into CAL again now!!!