You can add this to the list of things they are misleading the gamers with
http://www.pcgamer.com/2013/05/23/call-of-duty-engine-isnt-brand-new-but-upgrade d/
The games engine is not new and in fact is just a tweaked and upgraded Quake 3 Engine.
As soon as I saw the Trailer the other night I could instantly tell this was not a new engine.
There was a severe lack of graphical quality and detail not to mention it still looked like a typical over saturated DX9 game, with a bit of shine added to the players, trees etc to make them look slightly better.