Yes, it has beaten N°1: Return to castle wolfenstein on my list of best WO2 games.When I started the singleplayer the first thing I tought was, oh no this is just MoHAA with some more effects. But -out of that- it's MUCH more. I enjoyed the game from the very beginning till the bloody end.
Like you already knew is Call of Duty a WO2 first person shooter. First you play an American soldier that will be promoted during campaigns. Later you will also be an English and a Russian soldier those will be promoted after accomplishing missions.
The missions regenerate real battles what makes the game even more realistic.
The allies know much movements and shoot like real people. But the enemies are (of course) smart too. Anyway, the varied single player will never bore ... and if you've completed it (after rouglhy 12 hours) you still have the awesome multiplayer.
At the moment, this multiplayer is one of the most played games at the world.
Well ... in short, the game is very varied and realistic.
This game is not only the best WO2 game but also the best PC game so far.