Uh.......everything looks better than CoD's engine. CoD has infamously bad graphics and the physics/visual effects of the engine are next to none.
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Personally i prefer Unreal or Frost engine. Although to be completely honest games that look good and games that play good are usually never the same.
I think the ONLY game with a great engine that also plays well is BF3. Usually the better gameplay will be the one with the worse graphics though.
I would say the Source Engine (Sometimes), CryEngine, Frostbite!
Source and Havok are my personal favorites.
CryEngine 3 or Unreal 3/4 (Samaritan Demo and GDC Demo)
All modern engines beat CoDs lol
I prefer Cry engine over Frostbite 2.0
Crytek or frostbite 2.0 depends on what u want
i'll stand for UE3, cuz it looks ok and doesn't have too many bugs
I don't care much. I only have shitty computers with shitty graphic cards, so I have to put everything to low or very low.
If I had to choose, I'd say the Source engine.