DevMaster.net has an article by Brad Jashinsky (of New World Video Games) comparing the DOOM 3 and Source gaming engines.Source scores on most of his points, making it his pick as the best overall game-making engine, while DOOM's engine is superior in the graphics department:
Joking aside, it's pretty obvious that for making a game the Source Engine is the obvious pick. If I wanted to make a graphics demo or even a CG movie I would probably pick the Doom 3 Engine. The Doom 3 Engine's only advantage is the in the graphics department, which won't make a complete or even a good game. The Source Engine is the complete package and its only competition for graphics is Far Cry and Doom 3. Combining the two engines would be a dream of mine and pretty much any other game developer out there.
DevMaster.net - Source Engine vs Doom 3 EngineDiscussion >>
