Is Halo CE is ONE of the best FPS ever but not THE Best FPS ever?

[FaRmLaNd]

Half-life 2 episode 2 is probably the strongest single player FPS I've ever played.

In regards to multiplayer halo 3 is my most played FPS ever.

If I had to say whats the best fps I've ever played that title would go to deus-ex.