Like I owe you an answer. Go play it yourself, if possible, past the tutorial area? Then come back and apologize how right I was.
I didn't played it (because I don't want to spend money on a game that might be ****ty FPS) and you don't want to tell my why it is better than any other FPS. Guess I will never find out then.
What's there to tell? Some experiences aren't to be told. You have to play it. Besides, it's very cheap at this point.
What I liked on the top of my head? Very thorough setting and believable level design, above average AI, very good punch and physicality to the combat, fantastic soundtrack, very diverse places to visit, overall very well paced. The whole thing just feels "right".
Yeah sorry I didn't summon some voodoo numbers out of my hat, this has to suffice for starters.